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A unitary authority is a
local authority Local government is a generic term for the lowest tiers of public administration within a particular sovereign state. This particular usage of the word government refers specifically to a level of administration that is both geographically-loca ...
responsible for all
local government Local government is a generic term for the lowest tiers of public administration within a particular sovereign state. This particular usage of the word government refers specifically to a level of administration that is both geographically-loca ...
functions within its area or performing additional functions that elsewhere are usually performed by a higher level of sub-national government or the national government. Typically unitary authorities cover
town A town is a human settlement. Towns are generally larger than villages and smaller than cities, though the criteria to distinguish between them vary considerably in different parts of the world. Origin and use The word "town" shares an ori ...
s or
cities A city is a human settlement of notable size.Goodall, B. (1987) ''The Penguin Dictionary of Human Geography''. London: Penguin.Kuper, A. and Kuper, J., eds (1996) ''The Social Science Encyclopedia''. 2nd edition. London: Routledge. It can be def ...
which are large enough to function independently of a
council A council is a group of people who come together to consult, deliberate, or make decisions. A council may function as a legislature, especially at a town, city or county/shire level, but most legislative bodies at the state/provincial or natio ...
or other authority. An authority can be a unit of a
county A county is a geographic region of a country used for administrative or other purposesChambers Dictionary, L. Brookes (ed.), 2005, Chambers Harrap Publishers Ltd, Edinburgh in certain modern nations. The term is derived from the Old French ...
or
combined authority A combined authority is a type of local government institution introduced in England outside Greater London by the Local Democracy, Economic Development and Construction Act 2009. Combined authorities are created voluntarily and allow a grou ...
.


Canada

In Canada, each province creates its own system of local government, so terminology varies substantially. In certain provinces (e.g.
Alberta Alberta ( ) is one of the thirteen provinces and territories of Canada. It is part of Western Canada and is one of the three prairie provinces. Alberta is bordered by British Columbia to the west, Saskatchewan to the east, the Northwest Ter ...
,
Nova Scotia Nova Scotia ( ; ; ) is one of the thirteen provinces and territories of Canada. It is one of the three Maritime provinces and one of the four Atlantic provinces. Nova Scotia is Latin for "New Scotland". Most of the population are native Eng ...
) there is ''only'' one level of local government in that province, so no special term is used to describe the situation.
British Columbia British Columbia (commonly abbreviated as BC) is the westernmost province of Canada, situated between the Pacific Ocean and the Rocky Mountains. It has a diverse geography, with rugged landscapes that include rocky coastlines, sandy beaches, ...
has only one such municipality,
Northern Rockies Regional Municipality The Northern Rockies Regional Municipality (NRRM), formerly the Northern Rockies Regional District (NRRD), and before that the Fort Nelson–Liard Regional District, is a municipality in northeastern British Columbia, Canada. Although portrayed ...
, which was established in 2009. In
Ontario Ontario ( ; ) is one of the thirteen provinces and territories of Canada.Ontario is located in the geographic eastern half of Canada, but it has historically and politically been considered to be part of Central Canada. Located in Central Ca ...
the term single-tier municipalities is used, for a similar concept. Their character varies, and while most function as cities with no upper level of government, some function as counties or
regional municipalities A regional municipality (or region) is a type of Canadian municipal government similar to and at the same municipal government level as a county, although the specific structure and servicing responsibilities may vary from place to place. Reg ...
with no lower municipal subdivisions below them. They exist as individual
census divisions Census divisions, in Canada and the United States, are areas delineated for the purposes of statistical analysis and presentation; they have no government in and of themselves. The census divisions of Canada are second-level census geographic unit ...
, as well as separated municipalities.


Central Europe

In Germany,
kreisfreie Stadt In all German states, except for the three city states, the primary administrative subdivision higher than a ''Gemeinde'' (municipality) is the (official term in all but two states) or (official term in the states of North Rhine-Westphalia a ...
(literally ''circle-free city'') is the equivalent term for a city with the competences of both the
Gemeinde Gemeinde (; plural: Gemeinden) is a German word translating to "community", "town", "parish", or "municipality". Gemeinde may refer to: * An administrative division encompassing a single village, town, or city: ** Gemeinde (Austria) ** Gemeinde (G ...
(municipality) and the Kreis (district, literally ''circle'') administrative level. The directly elected chief executive officer of a ''kreisfreie Stadt'' is called ''Oberbürgermeister'' (literally ''Superior Burgomaster'', in English "Chief Mayor" or "Lord Mayor"). The British counties have no directly corresponding counterpart in Germany. This German system corresponds to statutory cities in Austria and in the Czech Republic.


Denmark

Until 1 January 2007, the municipalities of
Copenhagen Copenhagen ( or .; da, København ) is the capital and most populous city of Denmark, with a proper population of around 815.000 in the last quarter of 2022; and some 1.370,000 in the urban area; and the wider Copenhagen metropolitan ar ...
,
Frederiksberg Frederiksberg () is a part of the Capital Region of Denmark. It is formally an independent municipality, Frederiksberg Municipality, separate from Copenhagen Municipality, but both are a part of the City of Copenhagen. It occupies an area of ...
and
Bornholm Bornholm () is a Danish island in the Baltic Sea, to the east of the rest of Denmark, south of Sweden, northeast of Germany and north of Poland. Strategically located, Bornholm has been fought over for centuries. It has usually been ruled by ...
were not a part of a Danish
county A county is a geographic region of a country used for administrative or other purposesChambers Dictionary, L. Brookes (ed.), 2005, Chambers Harrap Publishers Ltd, Edinburgh in certain modern nations. The term is derived from the Old French ...
.


France

The city of
Paris Paris () is the capital and most populous city of France, with an estimated population of 2,165,423 residents in 2019 in an area of more than 105 km² (41 sq mi), making it the 30th most densely populated city in the world in 2020. S ...
works like a department council and a municipal council. Administratively at state level, it is both a department with a single departmental arrondissement (not to be confused with the 20 city districts of Paris, or ''arrondissements municipaux'', which are local subdivisions existing in very populated municipalities, including Paris, Lyon and Marseille, with their own arrondissement councils and arrondissement mayors also elected during municipal elections), however the prefecture of Paris is split between the prefecture of police of Paris (which covers the 3 other surrounding departments in the first ring) and the department prefecture (which is also the region prefecture, whose competence on police does not cover the 4 departments of Paris and the small ring). As the department of Paris has no department council elected during departmental elections, it is not subdivided into ''cantons'', but its 20 districts are considered equivalent. The department councils of the two departments of
Corsica Corsica ( , Upper , Southern ; it, Corsica; ; french: Corse ; lij, Còrsega; sc, Còssiga) is an island in the Mediterranean Sea and one of the 18 regions of France. It is the fourth-largest island in the Mediterranean and lies southeast of ...
and of the region merged into a unitary authority, officially a ''collectivité territoriale''. Its area of competence covers the whole administrative region and the two administrative departments (which were kept at state level with their two prefectures and their respective subprefectures for state-managed services). The overseas departements and regions were all proposed to merge their single departmental council (''conseil départemental'') coexisting with their regional council (''conseil régional'') on the same territory (at state level they are unified as ''DROM'' for their prefectures) into a ''collectivité unique''. The proposal was rejected by local referendum in
Guadeloupe Guadeloupe (; ; gcf, label=Antillean Creole, Gwadloup, ) is an archipelago and overseas department and region of France in the Caribbean. It consists of six inhabited islands—Basse-Terre, Grande-Terre, Marie-Galante, La Désirade, and the ...
and in
Réunion Réunion (; french: La Réunion, ; previously ''Île Bourbon''; rcf, label= Reunionese Creole, La Rényon) is an island in the Indian Ocean that is an overseas department and region of France. It is located approximately east of the island ...
, but this occurred in
Martinique Martinique ( , ; gcf, label=Martinican Creole, Matinik or ; Kalinago: or ) is an island and an overseas department/region and single territorial collectivity of France. An integral part of the French Republic, Martinique is located in th ...
and
French Guiana French Guiana ( or ; french: link=no, Guyane ; gcr, label=French Guianese Creole, Lagwiyann ) is an overseas departments and regions of France, overseas department/region and single territorial collectivity of France on the northern Atlantic ...
whose former departemental and regional councils were merged into a single unitary authority named ''assemblée'', elected during departmental elections.
Mayotte Mayotte (; french: Mayotte, ; Shimaore: ''Maore'', ; Kibushi: ''Maori'', ), officially the Department of Mayotte (french: Département de Mayotte), is an overseas department and region and single territorial collectivity of France. It is loc ...
with its newer status of department chose to keep this designation for its unitary authority, named departmental council (no regional council was ever created), but which also has the competence of a regional council (plus a few specific competences transferred from the state like other French overseas). The
Métropole de Lyon The Metropolis of Lyon (french: Métropole de Lyon), also known as ("Greater Lyon"), is a French territorial collectivity located in the east-central region of Auvergne-Rhône-Alpes. It is a directly elected metropolitan authority encompassing t ...
was created as a metropole from an earlier EPCI ( public establishment of intercommunal cooperation) but gained the competences of the departmental council. The departmental council of Rhône only covers the rest of the administrative department (which is still subdivided into two subprefectures, one of which includes the métropole). So the metropole is not a unitary authority, and no longer an EPCI (like other French metropoles), but it has a specific status, considered equivalent to a department council, except that its seats are elected during the municipal French elections (at the same time as its municipal councils in each member ''commune''), and that (like departments and regions, but unlike other French EPCI's including other metropoles) it is a territorial collectivity, with legal personality and fiscal autonomy.


New Zealand

In
New Zealand New Zealand ( mi, Aotearoa ) is an island country in the southwestern Pacific Ocean. It consists of two main landmasses—the North Island () and the South Island ()—and over 700 smaller islands. It is the sixth-largest island count ...
, a unitary authority is a
territorial authority Territorial authorities are the second tier of local government in New Zealand, below regional councils. There are 67 territorial authorities: 13 city councils, 53 district councils and the Chatham Islands Council. District councils serve a c ...
(district, city or metropolitan area) that also performs the functions of a regional council (first-level division). There are five unitary authorities, they are (with the year they were constituted):
Gisborne District Council Gisborne District Council ( mi, Te Kaunihera o Te Tairāwhiti) is the unitary authority for the Gisborne District of New Zealand. The council consists of a mayor and 13 ward councillors. The district consists of the city of Gisborne and a largel ...
(1989),
Tasman District Council Tasman District Council ( mi, Te Kaunihera o te tai o Aorere) is the unitary local authority for the Tasman District of New Zealand. The council is led by the mayor of Tasman, who is currently . Tasman elects its 13 councillors from five differ ...
(1992),
Nelson City Council Nelson City Council is a unitary local authority. It has its headquarters in Nelson. History Nelson City Council was created in 1992. Local governance of Nelson began with Nelson Province in 1853, which covered the entire upper South Island ...
(1992),
Marlborough District Council Marlborough District Council ( mi, Te Tauihu-o-te-waka) is the unitary local authority for the Marlborough District of New Zealand New Zealand ( mi, Aotearoa ) is an island country in the southwestern Pacific Ocean. It consists of tw ...
(1992), and
Auckland Council Auckland Council ( mi, Te Kaunihera o Tāmaki Makaurau) is the local government council for the Auckland Region in New Zealand. It is a territorial authority that has the responsibilities, duties and powers of a regional council and so is ...
(2010). The
Chatham Islands The Chatham Islands ( ) (Moriori: ''Rēkohu'', 'Misty Sun'; mi, Wharekauri) are an archipelago in the Pacific Ocean about east of New Zealand's South Island. They are administered as part of New Zealand. The archipelago consists of about te ...
, located east of the
South Island The South Island, also officially named , is the larger of the two major islands of New Zealand in surface area, the other being the smaller but more populous North Island. It is bordered to the north by Cook Strait, to the west by the Tasman ...
, have a council with its own special legislation, constituted (1995) with powers similar to those of a regional authority.


Poland

In
Poland Poland, officially the Republic of Poland, is a country in Central Europe. It is divided into 16 administrative provinces called voivodeships, covering an area of . Poland has a population of over 38 million and is the fifth-most populous ...
, a ''miasto na prawach powiatu'', or shortly ''powiat grodzki'' (''city with
powiat A ''powiat'' (pronounced ; Polish plural: ''powiaty'') is the second-level unit of local government and administration in Poland, equivalent to a county, district or prefecture ( LAU-1, formerly NUTS-4) in other countries. The term "''powia ...
rights'', or ''urban county'' in short) is a, typically big, city which is also responsible for district (poviat) administrative level, being part of no other ''powiat'' (e.g.
Kraków Kraków (), or Cracow, is the second-largest and one of the oldest cities in Poland. Situated on the Vistula River in Lesser Poland Voivodeship, the city dates back to the seventh century. Kraków was the official capital of Poland until 1596 ...
,
Łódź Łódź, also rendered in English as Lodz, is a city in central Poland and a former industrial centre. It is the capital of Łódź Voivodeship, and is located approximately south-west of Warsaw. The city's coat of arms is an example of canti ...
,
Wrocław Wrocław (; german: Breslau, or . ; Silesian German: ''Brassel'') is a city in southwestern Poland and the largest city in the historical region of Silesia. It lies on the banks of the River Oder in the Silesian Lowlands of Central Europe, rou ...
,
Poznań Poznań () is a city on the River Warta in west-central Poland, within the Greater Poland region. The city is an important cultural and business centre, and one of Poland's most populous regions with many regional customs such as Saint John ...
). In total, 65 cities in Poland have this status.


Taiwan

Most cities in
Taiwan Taiwan, officially the Republic of China (ROC), is a country in East Asia, at the junction of the East and South China Seas in the northwestern Pacific Ocean, with the People's Republic of China (PRC) to the northwest, Japan to the nort ...
, in contrast to
counties A county is a geographic region of a country used for administrative or other purposesChambers Dictionary, L. Brookes (ed.), 2005, Chambers Harrap Publishers Ltd, Edinburgh in certain modern nations. The term is derived from the Old French ...
, have only one tier of local government. Unlike the three county-administered cities (
Chiayi Chiayi (, Taigi POJ: ''Ka-gī''; ), officially known as Chiayi City, is a city located in the plains of southwestern Taiwan. Formerly called ''Kagee'' during the late Qing dynasty and ''Kagi'' during the Japanese era (), its historical name i ...
,
Keelung Keelung () or Jilong () (; Hokkien POJ: '), officially known as Keelung City, is a major port city situated in the northeastern part of Taiwan. The city is a part of the Taipei–Keelung metropolitan area, along with its neighbors, New Taipe ...
, and
Hsinchu Hsinchu (, Chinese: 新竹, Pinyin: ''Xīnzhú'', Wade–Giles: ''Hsin¹-chu²'') is a city located in northwestern Taiwan. It is the most populous city in Taiwan Province not among the special municipalities, with estimated 450,655 inhabi ...
), they are independent of their surrounding county. Special municipalities, with the exception of a few mountain indigenous districts within them, are also unitary.


United Kingdom


England

In
England England is a country that is part of the United Kingdom. It shares land borders with Wales to its west and Scotland to its north. The Irish Sea lies northwest and the Celtic Sea to the southwest. It is separated from continental Europe b ...
, "unitary authorities" are those local authorities set up in accordance with the Local Government Changes for England Regulations 1994 made under powers conferred by the
Local Government Act 1992 The Local Government Commission for England was the body responsible for reviewing the structure of local government in England from 1992 to 2002. It was established under the Local Government Act 1992, replacing the Local Government Boundary C ...
to form a single tier of
local government Local government is a generic term for the lowest tiers of public administration within a particular sovereign state. This particular usage of the word government refers specifically to a level of administration that is both geographically-loca ...
in specified areas and which are responsible for almost all local government functions within such areas. While outwardly appearing to be similar, single-tier authorities formed using older legislation are not ''unitary authorities'' thus excluding e.g. the
Council of the Isles of Scilly The Council of the Isles of Scilly is a ''sui generis'' unitary local government authority covering the Isles of Scilly off the west coast of Cornwall. It is currently made up of 16 seats, with all councillors being independents. The council w ...
or any other single-tier authority formed under the older legislation and not since given the status of a unitary authority. This is distinct from the two-tier system of local government which still exists in most of England, where local government functions are divided between
county council A county council is the elected administrative body governing an area known as a county. This term has slightly different meanings in different countries. Ireland The county councils created under British rule in 1899 continue to exist in Irela ...
s (the upper tier) and
district A district is a type of administrative division that, in some countries, is managed by the local government. Across the world, areas known as "districts" vary greatly in size, spanning regions or counties, several municipalities, subdivisions o ...
or borough councils. Until 1996 two-tier systems existed in
Scotland Scotland (, ) is a country that is part of the United Kingdom. Covering the northern third of the island of Great Britain, mainland Scotland has a border with England to the southeast and is otherwise surrounded by the Atlantic Ocean to the ...
and
Wales Wales ( cy, Cymru ) is a Countries of the United Kingdom, country that is part of the United Kingdom. It is bordered by England to the Wales–England border, east, the Irish Sea to the north and west, the Celtic Sea to the south west and the ...
, but these have now been replaced by systems based on a single tier of local government with some functions shared between groups of adjacent authorities. A single-tier system has existed in
Northern Ireland Northern Ireland ( ga, Tuaisceart Éireann ; sco, label= Ulster-Scots, Norlin Airlann) is a part of the United Kingdom, situated in the north-east of the island of Ireland, that is variously described as a country, province or region. Nort ...
since 1973. For many years the description of the number of tiers in UK local government arrangements has routinely ignored any current or previous bodies at the lowest level of authorities elected by the voters within their area such as
parish A parish is a territorial entity in many Christian denominations, constituting a division within a diocese. A parish is under the pastoral care and clerical jurisdiction of a priest, often termed a parish priest, who might be assisted by one or m ...
(in England and Wales) or community councils; such bodies do not exist or have not existed in all areas.


Rest of the United Kingdom

The definitive description "unitary authority" is specific to England alone in UK legislation. Thus single-tier authorities elsewhere in the UK are not properly styled as unitary authorities; also their rights, privileges and responsibilities are not the same.


Northern Ireland

Northern Ireland is divided into eleven districts for local government purposes. In Northern Ireland local councils have no responsibility for education, road building or housing (though they do nominate members to the advisory Northern Ireland Housing Council). Their functions include waste and recycling services, leisure and community services, building control and local economic and cultural development. Since their reorganisation in 2015 councils in Northern Ireland have also taken on responsibility for planning functions. The collection of
rates Rate or rates may refer to: Finance * Rates (tax), a type of taxation system in the United Kingdom used to fund local government * Exchange rate, rate at which one currency will be exchanged for another Mathematics and science * Rate (mathema ...
is handled by the
Land and Property Services The Land and Property Services (LPS, ga, Seirbhísí Talún & Maoine) is an agency of the Department of Finance of the Northern Ireland Executive. The agency, created in 2008, includes the Ordnance Survey of Northern Ireland {{Unreferenced, dat ...
agency.


Scotland

Local authorities in
Scotland Scotland (, ) is a country that is part of the United Kingdom. Covering the northern third of the island of Great Britain, mainland Scotland has a border with England to the southeast and is otherwise surrounded by the Atlantic Ocean to the ...
are unitary in nature but not in name. The
Local Government etc. (Scotland) Act 1994 The Local Government etc. (Scotland) Act 1994 (c. 39) is an Act of the Parliament of the United Kingdom which created the current local government structure of 32 unitary authorities covering the whole of Scotland. It abolished the two-tie ...
created a single tier of local government throughout Scotland. On 1 April 1996, 32 local government areas, each with a
council A council is a group of people who come together to consult, deliberate, or make decisions. A council may function as a legislature, especially at a town, city or county/shire level, but most legislative bodies at the state/provincial or natio ...
, replaced the previous two-tier structure, which had regional, islands and district councils.
Comhairle nan Eilean Siar Comhairle nan Eilean Siar (, for, , Scottish Gaelic, Council of the Western Isles) is the local government council for ''Na h-Eileanan Siar'' (the Outer Hebrides) council area of Scotland.
(formerly the Western Isles Council) uses the alternative
Gaelic Gaelic is an adjective that means "pertaining to the Gaels". As a noun it refers to the group of languages spoken by the Gaels, or to any one of the languages individually. Gaelic languages are spoken in Ireland, Scotland, the Isle of Man, and Ca ...
designation ''Comhairle''. While the phrase "unitary authority" is not used in Scottish legislation (whether from the Scottish Parliament or the UK Parliament), the term can be encountered (used either descriptively or erroneously) in a few official publications and in (usually erroneous) use by United Kingdom government departments.


Wales

Local authorities in
Wales Wales ( cy, Cymru ) is a Countries of the United Kingdom, country that is part of the United Kingdom. It is bordered by England to the Wales–England border, east, the Irish Sea to the north and west, the Celtic Sea to the south west and the ...
are unitary in nature but are described by the
Local Government (Wales) Act 1994 The Local Government (Wales) Act 1994 (c. 19) is an Act of the Parliament of the United Kingdom which amended the Local Government Act 1972 to create the current local government structure in Wales of 22 unitary authority areas, referred to as ...
as "principal councils", and their areas as
principal area {{Short description, Formal legal term for a county in England and Wales In England and Wales local government legislation, a principal area is one of the sub-national areas established for control by a principal council. They include most of the ar ...
s. Various other legislation (e.g. s.91(1)
Environment Act 1995 The Environment Act 1995c 25 passed under the ministerial tutelage of John Gummer, is a United Kingdom Act of Parliament which created a number of new agencies and set new standards for environmental management. See also *English land law *UK en ...
) includes the counties and county boroughs of Wales within their individual interpretations of the phrase "unitary authority" as an interpretive not a definitive description. In s.2 of the Act each council formed for a county is allocated the respective English and Welsh descriptions of "
County Council A county council is the elected administrative body governing an area known as a county. This term has slightly different meanings in different countries. Ireland The county councils created under British rule in 1899 continue to exist in Irela ...
" or "''Cyngor Sir''", each council formed for a
County Borough County borough is a term introduced in 1889 in the United Kingdom of Great Britain and Ireland, to refer to a borough or a city independent of county council control, similar to the unitary authorities created since the 1990s. An equivalent ter ...
is allocated the respective descriptions of "County Borough Council" or "''Cyngor Bwrdeistref Sirol''"; in all cases the shorter alternative forms "Council" or ''"Cyngor"'' can be used.


United States

There are several types of single-tier governments in the United States. In the states of
Connecticut Connecticut () is the southernmost state in the New England region of the Northeastern United States. It is bordered by Rhode Island to the east, Massachusetts to the north, New York to the west, and Long Island Sound to the south. Its cap ...
,
Rhode Island Rhode Island (, like ''road'') is a U.S. state, state in the New England region of the Northeastern United States. It is the List of U.S. states by area, smallest U.S. state by area and the List of states and territories of the United States ...
, and much of
Massachusetts Massachusetts (Massachusett language, Massachusett: ''Muhsachuweesut assachusett writing systems, məhswatʃəwiːsət'' English: , ), officially the Commonwealth of Massachusetts, is the most populous U.S. state, state in the New England ...
, county government has been abolished, and the municipalities (known as
New England town The town is the basic unit of Local government in the United States, local government and local division of state authority in the six New England states. Most other U.S. states lack a direct counterpart to the New England town. New England towns ...
s) are the only governing tier below the state government, though the former counties still exist in the ceremonial sense. In some areas, the reverse is true; for example,
Howard County, Maryland Howard County is located in the U.S. state of Maryland. As of the 2010 census, the population was 287,085. As of the 2020 census its population rose to 328,200. Its county seat is Ellicott City. Howard County is included in the Baltimore-Colu ...
and
Arlington County, Virginia Arlington County is a County (United States), county in the Virginia, Commonwealth of Virginia. The county is situated in Northern Virginia on the southwestern bank of the Potomac River directly across from the Washington, D.C., District of Co ...
are examples of counties that, despite being densely developed, have no municipalities and are thus the only tier of general-purpose local government. In Virginia, all municipalities with ''city'' status are, by definition, independent from any county. Three other cities across the United States are also independent of any county government:
Baltimore, Maryland Baltimore ( , locally: or ) is the List of municipalities in Maryland, most populous city in the U.S. state of Maryland, fourth most populous city in the Mid-Atlantic (United States), Mid-Atlantic, and List of United States cities by popula ...
,
St. Louis, Missouri St. Louis () is the second-largest city in Missouri, United States. It sits near the confluence of the Mississippi River, Mississippi and the Missouri Rivers. In 2020, the city proper had a population of 301,578, while the Greater St. Louis, ...
, and
Carson City, Nevada Carson City is an independent city and the capital of the U.S. state of Nevada. As of the 2020 census, the population was 58,639, making it the sixth largest city in Nevada. The majority of the city's population lives in Eagle Valley, on the ...
. There are also several consolidated cities where the county government and municipal government are unified.
San Francisco San Francisco (; Spanish language, Spanish for "Francis of Assisi, Saint Francis"), officially the City and County of San Francisco, is the commercial, financial, and cultural center of Northern California. The city proper is the List of Ca ...
and
Philadelphia Philadelphia, often called Philly, is the largest city in the Commonwealth of Pennsylvania, the sixth-largest city in the U.S., the second-largest city in both the Northeast megalopolis and Mid-Atlantic regions after New York City. Sinc ...
are two examples, wherein the city and county are coterminous and have one singular governing body. The
District of Columbia ) , image_skyline = , image_caption = Clockwise from top left: the Washington Monument and Lincoln Memorial on the National Mall, United States Capitol, Logan Circle, Jefferson Memorial, White House, Adams Morgan, ...
has had no lower tiers of government since 1871.
Arlington County Arlington County is a county in the Commonwealth of Virginia. The county is situated in Northern Virginia on the southwestern bank of the Potomac River directly across from the District of Columbia, of which it was once a part. The county ...
and
Alexandria, Virginia Alexandria is an independent city (United States), independent city in the northern region of the Commonwealth (U.S. state), Commonwealth of Virginia, United States. It lies on the western bank of the Potomac River approximately south of Downto ...
were returned to Virginia in 1847. The
District of Columbia Organic Act of 1871 The District of Columbia Organic Act of 1871 is an Act of Congress that repealed the individual charters of the cities of Washington and Georgetown and established a new territorial government for the whole District of Columbia. Though Congress ...
abolished all local governments including single remaining county and its two municipalities, Washington and Georgetown.


See also

*
Unitary state A unitary state is a sovereign state governed as a single entity in which the central government is the supreme authority. The central government may create (or abolish) administrative divisions (sub-national units). Such units exercise only th ...


References

{{reflist, 30em Interested parties in planning in the United Kingdom Local government in Canada Local government in the United Kingdom Political systems Politics of New Zealand Unitary state