Sydney ( ) is the capital city of the
state of
New South Wales, and the most populous city in both
Australia
Australia, officially the Commonwealth of Australia, is a Sovereign state, sovereign country comprising the mainland of the Australia (continent), Australian continent, the island of Tasmania, and numerous List of islands of Australia, sma ...
and
Oceania.
Located on Australia's east coast, the metropolis surrounds
Sydney Harbour
Port Jackson, consisting of the waters of Sydney Harbour, Middle Harbour, North Harbour and the Lane Cove and Parramatta Rivers, is the ria or natural harbour of Sydney, New South Wales, Australia. The harbour is an inlet of the Tasman Sea (p ...
and extends about towards the
Blue Mountains to the west,
Hawkesbury to the north, the
Royal National Park to the south and
Macarthur to the south-west. Sydney is made up of 658 suburbs, spread across 33 local government areas. Residents of the city are known as "Sydneysiders". The 2021 census recorded the population of Greater Sydney as 5,231,150, meaning the city is home to approximately 66% of the state's population.
[ Estimated resident population, 30 June 2017.] Nicknames of the city include the 'Emerald City' and the 'Harbour City'.
Aboriginal Australians have inhabited the Greater Sydney region for at least 30,000 years, and
Aboriginal
Aborigine, aborigine or aboriginal may refer to:
*Aborigines (mythology), in Roman mythology
* Indigenous peoples, general term for ethnic groups who are the earliest known inhabitants of an area
*One of several groups of indigenous peoples, see ...
engravings and cultural sites are common throughout Greater Sydney. The
traditional custodians of the land on which modern Sydney stands are the clans of the
Darug,
Dharawal and
Eora
The Eora (''Yura'') are an Aboriginal Australian people of New South Wales. Eora is the name given by the earliest European settlers to a group of Aboriginal people belonging to the clans along the coastal area of what is now known as the Sy ...
peoples.
During his
first Pacific voyage in 1770,
James Cook
James Cook (7 November 1728 Old Style date: 27 October – 14 February 1779) was a British explorer, navigator, cartographer, and captain in the British Royal Navy, famous for his three voyages between 1768 and 1779 in the Pacific Ocean an ...
charted the eastern coast of Australia, making landfall at
Botany Bay. In 1788, the
First Fleet
The First Fleet was a fleet of 11 ships that brought the first European and African settlers to Australia. It was made up of two Royal Navy vessels, three store ships and six convict transports. On 13 May 1787 the fleet under the command ...
of
convicts, led by
Arthur Phillip
Admiral Arthur Phillip (11 October 1738 – 31 August 1814) was a British Royal Navy officer who served as the first governor of the Colony of New South Wales.
Phillip was educated at Greenwich Hospital School from June 1751 unti ...
, founded Sydney as a British
penal colony, the first European settlement in Australia.
After World War II, Sydney experienced mass migration and by 2021 over 40 per cent of the population was born overseas. Foreign countries of birth with the greatest representation are Mainland China, India,
England, Vietnam and the Philippines.
Despite being one of the most expensive cities in the world, Sydney frequently ranks in the top ten
most liveable cities in the world.
It is classified as an
Alpha
Alpha (uppercase , lowercase ; grc, ἄλφα, ''álpha'', or ell, άλφα, álfa) is the first letter of the Greek alphabet. In the system of Greek numerals, it has a value of one. Alpha is derived from the Phoenician letter aleph , whic ...
global city by the
Globalization and World Cities Research Network, indicating its influence in the region and throughout the world. Ranked eleventh in the world for economic opportunity, Sydney has an advanced market economy with strengths in finance, manufacturing and
tourism.
[http://www.smh.com.au/national/tough-week-for-a-sydney-success-story-20120217-1te9q.html?skin=text-only ] Established in 1850, the
University of Sydney was Australia's first university and is regarded as one of the world's leading universities.
[http://www.topuniversities.com/university-rankings/world-university-septerankings/2016#sorting=rank+region=+country=319+faculty=+stars=false+search= ]
Sydney has hosted major international sporting events such as the
2000 Summer Olympics
The 2000 Summer Olympics, officially the Games of the XXVII Olympiad and also known as Sydney 2000 (Dharug: ''Gadigal 2000''), the Millennium Olympic Games or the Games of the New Millennium, was an international multi-sport event held from 1 ...
. The city is among the top fifteen most-visited cities in the world, with millions of tourists coming each year to see the city's landmarks.
The city has over of
nature reserves and parks, and its notable natural features include
Sydney Harbour
Port Jackson, consisting of the waters of Sydney Harbour, Middle Harbour, North Harbour and the Lane Cove and Parramatta Rivers, is the ria or natural harbour of Sydney, New South Wales, Australia. The harbour is an inlet of the Tasman Sea (p ...
and Royal National Park. The Sydney Harbour Bridge and the World Heritage-listed
Sydney Opera House
The Sydney Opera House is a multi-venue performing arts centre in Sydney. Located on the foreshore of Sydney Harbour, it is widely regarded as one of the world's most famous and distinctive buildings and a masterpiece of 20th-century architec ...
are major tourist attractions.
Central Station is the hub of Sydney's rail network, and the main passenger airport serving the city is
Kingsford Smith Airport
Sydney Kingsford Smith Airport (colloquially Mascot Airport, Kingsford Smith Airport, or Sydney Airport; ; ) is an international airport in Sydney, Australia, located 8 km (5 mi) south of the Sydney central business district, in the ...
, one of the world's oldest continually operating airports.
Toponymy
In 1788, Captain
Arthur Phillip
Admiral Arthur Phillip (11 October 1738 – 31 August 1814) was a British Royal Navy officer who served as the first governor of the Colony of New South Wales.
Phillip was educated at Greenwich Hospital School from June 1751 unti ...
, the first governor of
New South Wales, named the cove where the first British settlement was established
Sydney Cove
Sydney Cove (Eora: ) is a bay on the southern shore of Sydney Harbour, one of several harbours in Port Jackson, on the coast of Sydney, New South Wales. Sydney Cove is a focal point for community celebrations, due to its central Sydney locatio ...
after Home Secretary
Thomas Townshend, 1st Viscount Sydney.
The cove was called ''Warrane'' by the Aboriginal inhabitants. Phillip considered naming the settlement
Albion
Albion is an alternative name for Great Britain. The oldest attestation of the toponym comes from the Greek language. It is sometimes used poetically and generally to refer to the island, but is less common than 'Britain' today. The name for Scot ...
, but this name was never officially used.
By 1790 Phillip and other officials were regularly calling the township Sydney. The town of Sydney was declared a city in 1842.
The
Gadigal (Cadigal) clan, whose territory stretches along the southern shore of Port Jackson from
South Head to
Darling Harbour
Darling Harbour is a harbour adjacent to the city centre of Sydney, New South Wales, Australia that is made up of a large recreational and pedestrian precinct that is situated on western outskirts of the Sydney central business district.
Origin ...
, are the traditional owners of the land on which the British settlement was initially established, and call their territory ''Gadi'' (''Cadi''). Aboriginal clan names within the Sydney region were often formed by adding the suffix "-gal" to a word denoting the name for their territory, a specific place in their territory, a food source, or totem. The modern Greater Sydney area covers the traditional lands of 28 known Aboriginal clans.
History
First inhabitants of the region

The first people to inhabit the area now known as Sydney were
Aboriginal Australians who had migrated from northern Australia and before that from southeast Asia. Flaked pebbles found in Western Sydney's gravel sediments might indicate human occupation from 45,000 to 50,000 years BP,
while
radiocarbon dating
Radiocarbon dating (also referred to as carbon dating or carbon-14 dating) is a method for determining the age of an object containing organic material by using the properties of radiocarbon, a radioactive isotope of carbon.
The method was dev ...
has shown evidence of human activity in the Sydney region from around 30,000 years ago.
Prior to the arrival of the British, there were 4,000 to 8,000 Aboriginal people in the greater Sydney region.
The inhabitants subsisted on fishing, hunting, and gathering plant foods and shellfish. The diet of the coastal clans was more reliant on
seafoods
Seafood is any form of sea life regarded as food by humans, prominently including fish and shellfish. Shellfish include various species of molluscs (e.g. bivalve molluscs such as clams, oysters and mussels, and cephalopods such as octopus and ...
whereas the food of hinterland clans was more focused on forest animals and plants. The clans had distinctive sets of equipment and weapons mostly made of stone, wood, plant materials, bone and shell. They also differed in their body decorations, hairstyles, songs and dances. Aboriginal clans had a rich ceremonial life which was part of a belief system centering on ancestral, totemic and supernatural beings. People from different clans and language groups came together to participate in initiation and other ceremonies. These occasions fostered trade, marriages and clan alliances.
[Attenbrow (2010). pp. 28,158]
The earliest
British settlers recorded the word '
Eora
The Eora (''Yura'') are an Aboriginal Australian people of New South Wales. Eora is the name given by the earliest European settlers to a group of Aboriginal people belonging to the clans along the coastal area of what is now known as the Sy ...
' as an Aboriginal term meaning either 'people' or 'from this place'.
The clans of the Sydney area occupied land with traditional boundaries. There is debate, however, about which group or nation these clans belonged to, and the extent of differences in language, dialect and initiation rites. The major groups were the coastal Eora people, the Dharug (Darug) occupying the inland area from
Parramatta to the Blue Mountains, and the Dharawal people south of Botany Bay.
Darginung and Gundungurra languages were spoken on the fringes of the Sydney area.
[Attenbrow (2010). pp. 22-29]
The first meeting between Aboriginals and British explorers occurred on 29 April 1770 when Lieutenant James Cook landed at
Botany Bay (Kamay) and encountered the
Gweagal clan. Two Gweagal men opposed the landing party and in the confrontation one of them was shot and wounded. Cook and his crew stayed at Botany Bay for a week, collecting water, timber, fodder and botanical specimens and exploring the surrounding area. Cook sought to establish relations with the Aboriginal population without success.
Convict town (1788–1840)
Britain had been sending convicts to its American colonies for most of the eighteenth century, and the loss of these colonies in 1783 was the impetus for the decision to establish a penal colony at Botany Bay. Proponents of colonisation also pointed to the strategic importance of a new base in the Asia-Pacific region and its potential to provide much-needed timber and flax for the navy.
The
First Fleet
The First Fleet was a fleet of 11 ships that brought the first European and African settlers to Australia. It was made up of two Royal Navy vessels, three store ships and six convict transports. On 13 May 1787 the fleet under the command ...
of 11 ships under the command of Captain
Arthur Phillip
Admiral Arthur Phillip (11 October 1738 – 31 August 1814) was a British Royal Navy officer who served as the first governor of the Colony of New South Wales.
Phillip was educated at Greenwich Hospital School from June 1751 unti ...
arrived in Botany Bay in January 1788. It consisted of more than a thousand settlers, including 736 convicts. The fleet soon moved to the more suitable
Port Jackson where a settlement was established at
Sydney Cove
Sydney Cove (Eora: ) is a bay on the southern shore of Sydney Harbour, one of several harbours in Port Jackson, on the coast of Sydney, New South Wales. Sydney Cove is a focal point for community celebrations, due to its central Sydney locatio ...
on 26 January 1788. The colony of New South Wales was formally proclaimed by Governor Phillip on 7 February 1788. Sydney Cove offered a fresh water supply and a safe harbour, which Philip described as being, 'with out exception the finest Harbour in the World
..Here a Thousand Sail of the Line may ride in the most perfect Security'.
The settlement was planned to be a self-sufficient penal colony based on subsistence agriculture. Trade and ship building were banned in order to keep the convicts isolated. However, the soil around the settlement proved poor and the first crops failed, leading to several years hunger and strict food rationing. The food crisis was relieved with the arrival of the
Second Fleet
The United States Second Fleet is a numbered fleet in the United States Navy responsible for the East Coast and North Atlantic Ocean. The Fleet was established following World War II. In September 2011, Second Fleet was deactivated in view of ...
in mid-1790 and the
Third Fleet in 1791. Former convicts received small grants of land, and government and private farms spread to the more fertile lands around
Parramatta,
Windsor and
Camden
Camden may refer to:
People
* Camden (surname), a surname of English origin
* Camden Joy (born 1964), American writer
* Camden Toy (born 1957), American actor
Places Australia
* Camden, New South Wales
* Camden, Rosehill, a heritage res ...
on the
Cumberland Plain. By 1804, the colony was self-sufficient in food.
A smallpox epidemic in April 1789 killed about half the Indigenous population of the Sydney region.
In November 1790
Bennelong led a group of survivors of the Sydney clans into the settlement, establishing a continuous presence of Aboriginal Australians in settled Sydney.
Phillip had been given no instructions for urban development, but in July 1788 submitted a plan for the new town at
Sydney Cove
Sydney Cove (Eora: ) is a bay on the southern shore of Sydney Harbour, one of several harbours in Port Jackson, on the coast of Sydney, New South Wales. Sydney Cove is a focal point for community celebrations, due to its central Sydney locatio ...
. It included a wide central avenue, a permanent Government House, law courts, hospital and other public buildings, but no provision for warehouses, shops, or other commercial buildings. Phillip promptly ignored his own plan, and unplanned development became a feature of Sydney's topography.

After the departure of Phillip in December 1792, the colony's military officers began acquiring land and importing consumer goods obtained from visiting ships. Former convicts also engaged in trade and opened small businesses. Soldiers and former convicts built houses on Crown land, with or without official permission, in what was now commonly called Sydney town. Governor
William Bligh (180608) imposed restrictions on trade and commerce in the town and ordered the demolition of buildings erected on Crown land, including some owned by past and serving military officers. The resulting conflict culminated in the
Rum Rebellion of 1808, in which Bligh was deposed by the
New South Wales Corps.
Governor
Lachlan Macquarie
Major-general (United Kingdom), Major General Lachlan Macquarie, Companion of the Order of the Bath, CB (; gd, Lachann MacGuaire; 31 January 1762 – 1 July 1824) was a British Army officer and colonial administrator from Scotland. Macquarie se ...
(18101821), played a leading role in the development of Sydney and New South Wales, establishing a bank, a currency and a hospital. He employed a planner to design the street layout of Sydney and commissioned the construction of roads, wharves, churches, and public buildings.
Parramatta Road, linking Sydney and Parramatta, was opened in 1811
and a road across the
Blue Mountains was completed in 1815, opening the way for large scale farming and grazing in the lightly-wooded pastures west of the
Great Dividing Range
The Great Dividing Range, also known as the East Australian Cordillera or the Eastern Highlands, is a cordillera system in eastern Australia consisting of an expansive collection of mountain ranges, plateaus and rolling hills, that runs rough ...
.
Following the departure of Macquarie, official policy encouraged the emigration of free British settlers to New South Wales. Immigration to the colony increased from 900 free settlers in 1826-30 to 29,000 in 1836-40, many of whom settled in Sydney.
By the 1840s Sydney exhibited a geographic divide between poor and working class residents living west of the
Tank Stream in areas such as
The Rocks, and the more affluent residents living to its east.
Free settlers, free-born residents and former convicts now represented the vast majority of the population of Sydney, leading to increasing public agitation for responsible government and an end to transportation. Transportation to New South Wales ceased in 1840.
Conflict on the Cumberland Plain
In 1804, Irish convicts led around 300 rebels in the
Castle Hill Rebellion
The Castle Hill convict rebellion was an 1804 Convicts in Australia, convict rebellion in the Castle Hill, New South Wales, Castle Hill area of Sydney, against the colonial authorities of the British Empire, British colony of Colony of New South ...
, an attempt to march on Sydney, commandeer a ship, and sail to freedom. Poorly armed, and with their leader Philip Cunningham captured, the main body of insurgents were routed by about 100 troops and volunteers at
Rouse Hill. At least 39 convicts were killed in the uprising and subsequent executions.
As the colony spread to the more fertile lands around the
Hawkesbury river, north-west of Sydney, conflict between the settlers and the
Darug people intensified, reaching a peak from 1794 to 1810. Bands of Darug people, led by
Pemulwuy and later by his son
Tedbury, burned crops, killed livestock and raided settler huts and stores in a pattern of resistance that was to be repeated as the
colonial frontier expanded. A military garrison was established on the Hawkesbury in 1795. The death toll from 1794 to 1800 was 26 settlers and up to 200 Darug.
Conflict again erupted from 1814 to 1816 with the expansion of the colony into Dharawal country in the Nepean region south-west of Sydney. Following the deaths of several settlers, Governor Macquarie despatched three military detachments into Dharawal lands, culminating in the
Appin massacre (April 1816) in which at least 14 Aboriginal people were killed.
Colonial city (1841–1900)
The New South Wales Legislative Council was transformed into a semi-elected body in 1842. The town of Sydney was declared a city the same year, and a governing council established, elected on a restrictive property franchise.

The discovery of gold in New South Wales and Victoria in 1851 initially caused some economic disruption as male workers moved to the goldfields. Melbourne soon overtook Sydney as Australia's largest city, leading to an enduring rivalry between the two cities. However, increased immigration from overseas and wealth from gold exports increased demand for housing, consumer goods, services and urban amenities.
[Goodman, David (2013). "The gold rushes of the 1850s". ''The Cambridge History of Australia, Volume I''. pp. 180–81.] The New South Wales government also stimulated growth by investing heavily in railways, trams, roads, ports, telegraph, schools and urban services. The population of Sydney and its suburbs grew from 95,600 in 1861 to 386,900 in 1891. The city developed many of its characteristic features. The growing population packed into rows of terrace houses in narrow streets. New public buildings of sandstone abounded, including at the
University of Sydney (1854–61), the
Australian Museum (1858–66), the Town Hall (1868–88), and the
General Post Office
The General Post Office (GPO) was the state postal system and telecommunications carrier of the United Kingdom until 1969. Before the Acts of Union 1707, it was the postal system of the Kingdom of England, established by Charles II in 1660. ...
(1866–92). Elaborate
coffee palaces and hotels were erected.
Exotic plants such as jacarandas and frangipani were introduced in parks and gardens. Daylight bathing at Sydney's beaches was banned, but segregated bathing at designated ocean baths was popular.
Drought, the winding down of public works and a financial crisis led to economic depression in Sydney throughout most of the 1890s. Meanwhile, the Sydney-based premier of New South Wales,
George Reid, became a key figure in the process of federation.
State capital (1901–present)
When the six colonies federated on 1 January 1901, Sydney became the capital of the State of New South Wales. The spread of
bubonic plague
Bubonic plague is one of three types of plague caused by the plague bacterium (''Yersinia pestis''). One to seven days after exposure to the bacteria, flu-like symptoms develop. These symptoms include fever, headaches, and vomiting, as well a ...
in 1900 prompted the new state government to modernise the wharves and demolish inner-city slums. The outbreak of the First World War in 1914 saw more Sydney males volunteer for the armed forces than the Commonwealth authorities could process, and helped reduce unemployment in the city. Those returning from the war in 1918 were promised "homes fit for heroes" in new suburbs such as Daceyville and Matraville. "Garden suburbs" and mixed industrial and residential developments also grew along the rail and tram corridors.
The population reached one million in 1926, after Sydney had regained its position as the most populous city in Australia. The government created jobs with massive public projects such as the electrification of the
Sydney rail network and building the Sydney Harbour Bridge.

Sydney was more severely affected by the
Great Depression
The Great Depression (19291939) was an economic shock that impacted most countries across the world. It was a period of economic depression that became evident after a major fall in stock prices in the United States. The economic contagio ...
of the 1930s than regional NSW or Melbourne. New building almost came to a standstill, and by 1933 the unemployment rate for male workers was 28 per cent, but over 40 per cent in working class areas such as Alexandria and Redfern. Many families were evicted from their homes and shanty towns grew along coastal Sydney and Botany Bay, the largest being "Happy Valley" at
La Perouse. The Depression also exacerbated political divisions. In March 1932, when populist Labor premier
Jack Lang attempted to open the Sydney Harbour Bridge he was upstaged by
Francis de Groot
Francis Edward de Groot (24 October 18881 April 1969) was a member of the fascist, paramilitary organisation, the New Guard of Australia, who was most famous for intervening on horseback during the official opening of the Sydney Harbour Bridge ...
of the far-right
New Guard, who slashed the ribbon with a sabre.
In January 1938, Sydney celebrated the
Empire Games and the sesquicentenary of European settlement in Australia. One journalist wrote, "Golden beaches. Sun tanned men and maidens...Red-roofed villas terraced above the blue waters of the harbour...Even
Melbourne seems like some grey and stately city of Northern Europe compared with Sydney's sub-tropical splendours." Meanwhile, a congress of the "Aborigines of Australia", declared 26 January "A
Day of Mourning" for "the whiteman's seizure of our country."
With the outbreak of war in 1939, Sydney experienced a surge in industrial development to meet the needs of a wartime economy. Unemployment virtually disappeared and women moved into jobs previously male preserves. Sydney was attacked by
Japanese submarines in May and June 1942 with 21 lives lost. Households throughout the city built air raid shelters and performed drills.
A post-war immigration and baby boom saw a rapid increase in Sydney's population and the spread of low-density housing in suburbs throughout the Cumberland Plain. Immigrantsmostly from Britain and continental Europeand their children accounted for over three-quarters of Sydney's population growth between 1947 and 1971. The newly created Cumberland County Council oversighted low-density residential developments, the largest at
Green Valley and
Mount Druitt. Older residential centres such as Parramatta,
Bankstown and
Liverpool became suburbs of the metropolis. Manufacturing, protected by high tariffs, employed over a third of the workforce from 1945 to the 1960s. However, as the long post-war economic boom progressed, retail and other service industries became the main source of new jobs.
An estimated one million onlookers, most of the city's population, watched as
Queen Elizabeth II
Elizabeth II (Elizabeth Alexandra Mary; 21 April 1926 – 8 September 2022) was Queen of the United Kingdom and other Commonwealth realms from 6 February 1952 until Death and state funeral of Elizabeth II, her death in 2022. She was queen ...
landed in 1954 at Farm Cove where Captain Phillip had raised the Union Jack 165 years earlier, commencing her
Australian Royal Tour. It was the first time a reigning monarch stepped onto Australian soil.
Increasing high rise development in Sydney and the expansion of suburbs beyond the "green belt" envisaged by the planners of the 1950s resulted in community protests. In the early 1970s, trade unions and resident action groups imposed
green bans on development projects in historic areas such as The Rocks. Federal, State and local governments subsequently introduced a range of heritage and environmental legislation.
The Sydney Opera House was also controversial for its cost and disputes between architect
Jørn Utzon and government officials. However, soon after it opened in 1973 it became a major tourist attraction and symbol of the city. The progressive reduction in tariff protection from 1974 began the transformation of Sydney from a manufacturing centre focused on the domestic market to a "world city" providing financial, commercial, cultural and educational services to local residents and Australian and overseas markets. From the 1980s, overseas
immigration to Sydney grew rapidly, with
Asia, the
Middle East and
Africa becoming major sources of immigrants. By 2021, the population of Sydney was over 5.2 million, with 40% of the population born overseas. China and India overtook England as the largest source countries for overseas-born residents.
Geography
Topography

Sydney is a coastal basin with the
Tasman Sea to the east, the
Blue Mountains to the west, the Hawkesbury River to the north, and the
Woronora Plateau to the south. The inner City Of Sydney measures , the Greater Sydney region (which includes the non-metropolitan areas of Central Coast, Blue Mountains, Wollondilly, Wollongong and Shellharbour) covers , and the city's urban area is in size. Metropolitan Sydney's boundaries stretch 88 kilometres (55 mi) from
Palm Beach in the north to
Waterfall in the south, and 70 kilometres (43 mi) from
Bondi Beach
Bondi Beach is a popular beach and the name of the surrounding suburb in Sydney, New South Wales, Australia. Bondi Beach is located east of the Sydney central business district, in the local government area of Waverley Council, in the Easter ...
in the east to
Emu Plains in the west.
Sydney spans two geographic regions. The
Cumberland Plain lies to the south and west of the Harbour and is relatively flat. The
Hornsby Plateau is located to the north and is dissected by steep valleys. The flat areas of the south were the first to be developed as the city grew. It was not until the construction of the Sydney Harbour Bridge that the northern reaches of the coast became more heavily populated.
Seventy surf beaches can be found along its coastline with Bondi Beach being one of the most famous.
The
Nepean River wraps around the western edge of the city and becomes the Hawkesbury River before reaching
Broken Bay
Broken Bay, a semi-mature tide-dominated drowned valley estuary, is a large inlet of the Tasman Sea located about north of Sydney central business district on the coast of New South Wales, Australia; being one of the bodies of water that separa ...
. Most of Sydney's water storages can be found on tributaries of the Nepean River. The
Parramatta River is mostly industrial and drains a large area of Sydney's western suburbs into Port Jackson. The southern parts of the city are drained by the
Georges River
The Georges River, also known as Tucoerah River, is an intermediate tide-dominated drowned valley estuary, located to the south and west of Sydney, New South Wales, Australia.
The river travels for approximately in a north and then easterly ...
and the
Cooks River
The Cooks River, a semi-mature tide-dominated drowned valley estuary, is a tributary of Botany Bay, located in south-eastern Sydney, New South Wales, Australia.
The course of the long urban waterway has been altered to accommodate various deve ...
into Botany Bay.
According to calculations by the
Senseable City Lab at the
Massachusetts Institute of Technology (MIT), 25.9% of Sydney is
covered by trees, making it the third largest city in the world with the most trees after
Singapore and
Oslo, respectively, tying with
Vancouver.
Geology

Sydney is made up of mostly
Triassic rock with some recent
igneous dykes and
volcanic necks (typically found in the
Prospect dolerite intrusion, west of Sydney). The
Sydney Basin
The Sydney Basin is an interim Australian bioregion and is both a structural entity and a depositional area, now preserved on the east coast of New South Wales, Australia and with some of its eastern side now subsided beneath the Tasman Sea. ...
was formed when the Earth's crust expanded, subsided, and filled with sediment in the early Triassic period.
The sand that was to become the sandstone of today was washed there by rivers from the south and northwest and laid down between 360 and 200 million years ago. The sandstone has
shale
Shale is a fine-grained, clastic sedimentary rock formed from mud that is a mix of flakes of clay minerals (hydrous aluminium phyllosilicates, e.g. kaolin, Al2 Si2 O5( OH)4) and tiny fragments (silt-sized particles) of other minerals, especial ...
lenses and fossil riverbeds.
The
Sydney Basin
The Sydney Basin is an interim Australian bioregion and is both a structural entity and a depositional area, now preserved on the east coast of New South Wales, Australia and with some of its eastern side now subsided beneath the Tasman Sea. ...
bioregion includes coastal features of cliffs, beaches, and estuaries. Deep river valleys known as
rias were carved during the Triassic period in the
Hawkesbury sandstone of the coastal region where Sydney now lies. The rising sea level between 18,000 and 6,000 years ago flooded the rias to form estuaries and deep harbours.
Port Jackson, better known as Sydney Harbour, is one such
ria. Sydney features two major soil types;
sandy soil
Sandy may refer to:
People and fictional characters
*Sandy (given name), including a list of people and fictional characters
* Sandy (surname), a list of people
*Sandy (singer), Brazilian singer and actress Sandy Leah Lima (born 1983)
* (Sandy) ...
s (which originate from the Hawkesbury sandstone) and
clay (which are from shales and
volcanic rocks), though some soils may be a mixture of the two.
Directly overlying the older Hawkesbury sandstone is the
Wianamatta shale, a geological feature found in western Sydney that was deposited in connection with a large
river delta during the
Middle Triassic period which shifted over time from west to east. The Wianamatta shale generally comprises fine grained
sedimentary rocks such as shales,
mudstone
Mudstone, a type of mudrock, is a fine-grained sedimentary rock whose original constituents were clays or muds. Mudstone is distinguished from '' shale'' by its lack of fissility (parallel layering).Blatt, H., and R.J. Tracy, 1996, ''Petrology. ...
s,
ironstones,
siltstone
Siltstone, also known as aleurolite, is a clastic sedimentary rock that is composed mostly of silt. It is a form of mudrock with a low clay mineral content, which can be distinguished from shale by its lack of fissility.Blatt ''et al.'' 1980, p ...
s and
laminites, with less common sandstone units.
The Wianamatta Group is made up of the following units (listed in stratigraphic order):
Bringelly Shale,
Minchinbury Sandstone
Minchinbury Sandstone is a component of the Wianammatta Group of sedimentary rocks in the Sydney Basin of eastern Australia.
Formation
Formed in the middle Triassic period, this sandstone was structured by marine deposition as a set of sandy bar ...
and
Ashfield Shale.
Ecology

The most prevalent
plant communities in the Sydney region are grassy woodlands (i.e.
savannas) and some pockets of dry
sclerophyll forests, which consist of
eucalyptus trees,
casuarinas,
melaleuca
''Melaleuca'' () is a genus of nearly 300 species of plants in the myrtle family, Myrtaceae, commonly known as paperbarks, honey-myrtles or tea-trees (although the last name is also applied to species of '' Leptospermum''). They range in size ...
s,
corymbia
''Corymbia'', commonly known as bloodwoods, is a genus of about one hundred species of tree that, along with ''Eucalyptus'', '' Angophora'' and several smaller groups, are referred to as eucalypts. Until 1990, corymbias were included in the gen ...
s and
angophora
''Angophora'' is a genus of nine species of trees and shrubs in the myrtle family, Myrtaceae. Endemic to eastern Australia, they differ from other eucalypts in having juvenile and adult leaves arranged in opposite pairs, sepals reduced to projec ...
s, with shrubs (typically
wattles,
callistemon
''Callistemon'' is a genus of shrubs in the family Myrtaceae, first described as a genus in 1814. The entire genus is endemic to Australia but widely cultivated in many other regions and naturalised in scattered locations. Their status as a se ...
s,
grevilleas and
banksias), and a semi-continuous grass in the
understory. The plants in this community tend to have rough and spiky leaves, as they're grown in areas with low
soil fertility
Soil fertility refers to the ability of soil to sustain agricultural plant growth, i.e. to provide plant habitat and result in sustained and consistent yields of high quality. . Sydney also features a few areas of wet sclerophyll forests which are found in the wetter, elevated areas in the
north and the
northeast
The points of the compass are a set of horizontal, radially arrayed compass directions (or azimuths) used in navigation and cartography. A compass rose is primarily composed of four cardinal directions—north, east, south, and west—each sepa ...
. These forests are defined by straight, tall tree
canopies with a moist understory of soft-leaved shrubs,
tree ferns and herbs.
The predominant vegetation community in Sydney is the
Cumberland Plain Woodland, which is found in
Western Sydney (
Cumberland Plain), followed by the
Sydney Turpentine-Ironbark Forest which is scattered in the Inner West and
Northern Sydney,
[Recovering bushland on the Cumberland Plain]
Department of Environment and Conservation (NSW). (2005). Recovering Bushland on the Cumberland Plain: Best practice guidelines for the management and restoration of bushland. Department of Environment and Conservation (NSW), Sydney. Retrieved 12 September 2022. the
Eastern Suburbs Banksia Scrub in the coastline and the
Blue Gum High Forest which is scantily present in the North Shore – All of which are critically endangered.
The city also includes the
Sydney Sandstone Ridgetop Woodland
The Sydney Sandstone Ridgetop Woodland, also known as Coastal Sandstone Ridgetop Woodland and Hornsby Enriched Sandstone Exposed Woodland, is a shrubby woodland and mallee community situated in northern parts of Sydney, Australia, where it is f ...
found in
Ku-ring-gai Chase National Park on the
Hornsby Plateau to the north.
Sydney is home to dozens of
bird species, which commonly include the
Australian raven,
Australian magpie,
crested pigeon
The crested pigeon (''Ocyphaps lophotes'') is a bird found widely throughout mainland Australia except for the far northern tropical areas. Only two Australian pigeon species possess an erect crest, the crested pigeon and the spinifex pigeon. Th ...
,
noisy miner and the
pied currawong, among others.
Introduced bird species ubiquitously found in Sydney are the
common myna,
common starling
The common starling or European starling (''Sturnus vulgaris''), also known simply as the starling in Great Britain and Ireland, is a medium-sized passerine bird in the starling family, Sturnidae. It is about long and has glossy black plumage ...
,
house sparrow
The house sparrow (''Passer domesticus'') is a bird of the sparrow family Passeridae, found in most parts of the world. It is a small bird that has a typical length of and a mass of . Females and young birds are coloured pale brown and grey, a ...
and the
spotted dove
The spotted dove (''Spilopelia chinensis'') is a small and somewhat long-tailed pigeon that is a common resident breeding bird across its native range on the Indian subcontinent and in Southeast Asia. The species has been introduced to many parts ...
.
Reptile
Reptiles, as most commonly defined are the animals in the class Reptilia ( ), a paraphyletic grouping comprising all sauropsids except birds. Living reptiles comprise turtles, crocodilians, squamates (lizards and snakes) and rhynchocephalians ( ...
species are also numerous and predominantly include
skink
Skinks are lizards belonging to the family Scincidae, a family in the infraorder Scincomorpha. With more than 1,500 described species across 100 different taxonomic genera, the family Scincidae is one of the most diverse families of lizards. Ski ...
s. Sydney has a few
mammal
Mammals () are a group of vertebrate animals constituting the class Mammalia (), characterized by the presence of mammary glands which in females produce milk for feeding (nursing) their young, a neocortex (a region of the brain), fur or ...
and
spider species, such as the
grey-headed flying fox and the
Sydney funnel-web
The Sydney funnel-web spider (''Atrax robustus'') is a species of venomous mygalomorph spider native to eastern Australia, usually found within a radius of Sydney. It is a member of a group of spiders known as Australian funnel-web spiders. I ...
, respectively,
and has a huge diversity of
marine species
Marine life, sea life, or ocean life is the plants, animals and other organisms that live in the salt water of seas or oceans, or the brackish water of coastal estuaries. At a fundamental level, marine life affects the nature of the planet. ...
inhabiting its harbour and many beaches.
Climate

Under the
Köppen–Geiger classification, Sydney has a
humid subtropical climate
A humid subtropical climate is a zone of climate characterized by hot and humid summers, and cool to mild winters. These climates normally lie on the southeast side of all continents (except Antarctica), generally between latitudes 25° and 40° ...
(''Cfa'') with "warm
ndsometimes hot" summers and "cool" winters, as described by the
Australian Bureau of Statistics
The Australian Bureau of Statistics (ABS) is the independent statutory agency of the Australian Government responsible for statistical collection and analysis and for giving evidence-based advice to federal, state and territory governments ...
. The
El Niño–Southern Oscillation, the
Indian Ocean Dipole and the
Southern Annular Mode
The Antarctic oscillation (AAO, to distinguish it from the Arctic oscillation or AO), also known as the Southern Annular Mode (SAM), is a low-frequency mode of atmospheric variability of the southern hemisphere that is defined as a belt of stron ...
play an important role in determining Sydney's weather patterns:
drought and
bushfire on the one hand, and storms and flooding on the other, associated with the opposite
phases of the oscillation in Australia. The weather is
moderated by proximity to the ocean, and more extreme temperatures are recorded in the inland western suburbs.
At Sydney's primary weather station at
Observatory Hill, extreme temperatures have ranged from on 18
January 2013 to on 22 June 1932. An average of 14.9 days a year have temperatures at or above in the central business district (CBD).
In contrast, the metropolitan area averages between 35 and 65 days, depending on the suburb. The hottest day in the Sydney metropolitan area occurred in
Penrith on 4 January 2020, where a high of was recorded. The average annual temperature of the sea ranges from in September to in February. Sydney has an average of 7.2 hours of sunshine per day and 109.5 clear days annually.
Due to the inland location,
frost
Frost is a thin layer of ice on a solid surface, which forms from water vapor in an above-freezing atmosphere coming in contact with a solid surface whose temperature is below freezing, and resulting in a phase change from water vapor (a gas) ...
is recorded early in the morning in
Western Sydney a few times in winter. Autumn and spring are the transitional seasons, with spring showing a larger temperature variation than autumn.
Sydney experiences an
urban heat island effect.
This makes certain parts of the city more vulnerable to extreme heat, including coastal suburbs.
In late spring and summer, temperatures over are not uncommon, though hot, dry conditions are usually ended by a
southerly buster, a powerful southerly that brings
gale winds and a rapid fall in temperature. Since Sydney is downwind of the
Great Dividing Range
The Great Dividing Range, also known as the East Australian Cordillera or the Eastern Highlands, is a cordillera system in eastern Australia consisting of an expansive collection of mountain ranges, plateaus and rolling hills, that runs rough ...
, it occasionally experiences dry, westerly
foehn winds
A Foehn or Föhn (, , ), is a type of dry, relatively warm, downslope wind that occurs in the lee (downwind side) of a mountain range.
It is a rain shadow wind that results from the subsequent adiabatic warming of air that has dropped most of ...
typically in winter and early spring (which are the reason for its warm maximum temperatures). Westerly winds are intense when the
Roaring forties (or the
Southern Annular Mode
The Antarctic oscillation (AAO, to distinguish it from the Arctic oscillation or AO), also known as the Southern Annular Mode (SAM), is a low-frequency mode of atmospheric variability of the southern hemisphere that is defined as a belt of stron ...
) shift towards southeastern Australia, where they may damage homes and
affect flights, in addition to
making the temperature seem
colder than it actually is.
Rainfall has a moderate to low variability and has historically been fairly uniform throughout the year, although in recent years it has been more summer-dominant and erratic. Precipitation is usually higher in late summer through to early winter and lower in late winter to early spring.
In late autumn and winter,
east coast lows may bring large amounts of rainfall, especially in the CBD.
In the warm season
black nor'easters are usually the cause of heavy rain events, though other forms of
low-pressure areas, including remnants of
ex-cyclones, may also bring heavy deluge and afternoon thunderstorms, particularly in the western suburbs. Snowfall was last reported in the Sydney City area in 1836, while a fall of
graupel
Graupel (; ), also called soft hail, hominy snow, or snow pellets, is precipitation that forms when supercooled water droplets in air are collected and freeze on falling snowflakes, forming balls of crisp, opaque rime.
Graupel is distinct from ...
, or soft hail, in
Lindfield,
Roseville Roseville may refer to:
Australia
*Roseville, New South Wales
Canada
* Roseville, Ontario
Malta
* RoseVille (aka Villa Roseville), a house in Attard, Malta
South Africa
*Roseville, Pretoria, a suburb
United Kingdom
*Roseville, Dudley
United S ...
and
Killara was mistaken by many for snow, in July 2008. In 2009, dry conditions brought a severe
dust storm towards the city.
Regions

The regions of Sydney include the CBD or
City of Sydney (colloquially referred to as 'the City') and
Inner West, the
Eastern Suburbs,
Southern Sydney (including
St George
Saint George (Greek language, Greek: Γεώργιος (Geórgios), Latin language, Latin: Georgius, Arabic language, Arabic: القديس جرجس; died 23 April 303), also George of Lydda, was a Christians, Christian who is venerated as a sa ...
and
Sutherland Shire),
Greater Western Sydney
Greater Western Sydney (GWS) is a large region of the metropolitan area of Greater Sydney, New South Wales (NSW), Australia that generally embraces the north-west, south-west, central-west, and far western sub-regions within Sydney's metropoli ...
(including
South Western Sydney,
Hills District and the
Macarthur Region
Macarthur is a region in the south-west of Sydney, in the state of New South Wales, Australia. The region includes the local government areas of the City of Campbelltown, Camden Council, and Wollondilly Shire. It covers an area of 3,067 s ...
), and
Northern Sydney (including the
North Shore North Shore or Northshore may refer to:
Geographic features Australia
*North Shore (Sydney), a suburban region of Sydney
**Electoral district of North Shore
**North Shore railway line, Sydney
*Noosa North Shore, Queensland
* North Shore, New So ...
and
Northern Beaches). The
Greater Sydney Commission
The Greater Sydney Commission is an independent New South Wales Government agency responsible for land use planning across the metropolitan area of Sydney, Australia. The Commission was led by Lucy Turnbull
Lucinda Mary Turnbull Officer of t ...
divides Sydney into five districts based on the 33 LGAs in the metropolitan area; the Western City, the Central City, the Eastern City, the North District, and the South District. The Australian Bureau of Statistics includes City of Central Coast (the former Gosford City and Wyong Shire) as part of Greater Sydney for population counts. This adds another 330,000 people to the metropolitan area covered by Greater Sydney Commission.
Inner suburbs
The CBD extends about south from Sydney Cove. It is bordered by Farm Cove within the Royal Botanic Garden to the east and
Darling Harbour
Darling Harbour is a harbour adjacent to the city centre of Sydney, New South Wales, Australia that is made up of a large recreational and pedestrian precinct that is situated on western outskirts of the Sydney central business district.
Origin ...
to the west. Suburbs surrounding the CBD include
Woolloomooloo and
Potts Point to the east,
Surry Hills and
Darlinghurst to the south,
Pyrmont and
Ultimo to the west, and
Millers Point and
The Rocks to the north. Most of these suburbs measure less than in area. The Sydney CBD is characterised by considerably narrow streets and thoroughfares, created in its convict beginnings in the 18th century.
Several localities, distinct from suburbs, exist throughout Sydney's inner reaches.
Central
Central is an adjective usually referring to being in the center of some place or (mathematical) object.
Central may also refer to:
Directions and generalised locations
* Central Africa, a region in the centre of Africa continent, also known as ...
and
Circular Quay are transport hubs with ferry, rail, and bus interchanges.
Chinatown
A Chinatown () is an ethnic enclave of Chinese people located outside Greater China, most often in an urban setting. Areas known as "Chinatown" exist throughout the world, including Europe, North America, South America, Asia, Africa and Austra ...
, Darling Harbour, and
Kings Cross are important locations for culture, tourism, and recreation.
The Strand Arcade, which is located between
Pitt Street Mall and
George Street, is a historical
Victorian-style shopping
arcade. Opened on 1 April 1892, its shop fronts are an exact replica of the original internal shopping facades.
Westfield Sydney, located beneath the Sydney Tower, is the largest shopping centre by area in Sydney.

There is a long trend of
gentrification amongst Sydney's inner suburbs. Pyrmont located on the harbour was redeveloped from a centre of shipping and international trade to an area of
high density housing, tourist accommodation, and gambling. Originally located well outside of the city, Darlinghurst is the location of the historic, former
Darlinghurst Gaol, manufacturing, and mixed housing. It had a period when it was known as an area of
prostitution
Prostitution is the business or practice of engaging in Sex work, sexual activity in exchange for payment. The definition of "sexual activity" varies, and is often defined as an activity requiring physical contact (e.g., sexual intercourse, n ...
. The terrace style housing has largely been retained and Darlinghurst has undergone significant gentrification since the 1980s.
Green Square is a former industrial area of
Waterloo
Waterloo most commonly refers to:
* Battle of Waterloo, a battle on 18 June 1815 in which Napoleon met his final defeat
* Waterloo, Belgium, where the battle took place.
Waterloo may also refer to:
Other places
Antarctica
*King George Island (S ...
which is undergoing urban renewal worth $8 billion. On the city harbour edge, the historic suburb and wharves of Millers Point are being built up as the new area of
Barangaroo. The enforced rehousing of local residents due to the Millers Point/Barangaroo development has caused significant controversy despite the $6 billion worth of economic activity it is expected to generate. The suburb of
Paddington is a well known suburb for its streets of restored
terrace houses,
Victoria Barracks, and shopping including the weekly Oxford Street markets.
Inner West
The Inner West generally includes the
Inner West Council,
Municipality of Burwood,
Municipality of Strathfield
The Municipality of Strathfield, also known as Strathfield Council, is a local government area in the Inner West of Sydney, in the state of New South Wales, Australia.
Strathfield Council was incorporated on 2 June 1885. The Council area was ...
, and
City of Canada Bay. These span up to about 11 km west of the CBD. Suburbs in the Inner West have historically housed working class industrial workers, but have undergone gentrification over the 20th century. The region now mainly features medium- and high-density housing. Major features in the area include the
University of Sydney and the Parramatta River, as well as a large cosmopolitan community and the nightlife hub on King Street in
Newtown. The Anzac Bridge spans Johnstons Bay and connects
Rozelle to
Pyrmont and the city, forming part of the
Western Distributor.
The area is serviced by the
T1,
T2, and
T3 railway lines, including the
Main Suburban Line; which is the first to be constructed in New South Wales.
Strathfield railway station
Strathfield railway station is a heritage-listed railway station located on the Main Suburban line in the Sydney suburb of Strathfield in the Municipality of Strathfield local government area of New South Wales, Australia. The station is serv ...
is a secondary railway hub within Sydney, and major station on the Suburban and
Northern
Northern may refer to the following:
Geography
* North, a point in direction
* Northern Europe, the northern part or region of Europe
* Northern Highland, a region of Wisconsin, United States
* Northern Province, Sri Lanka
* Northern Range, a ra ...
lines. It was constructed in 1876, and will be a future terminus of