Postal Code
   HOME

TheInfoList



OR:

A postal code (also known locally in various English-speaking countries throughout the world as a postcode, post code, PIN or ZIP Code) is a series of letters or digits or both, sometimes including spaces or punctuation, included in a
postal address An address is a collection of information, presented in a mostly fixed format, used to give the location of a building, apartment, or other structure or a plot of land, generally using political boundaries and street names as references, along w ...
for the purpose of sorting
mail The mail or post is a system for physically transporting postcards, letters, and parcels. A postal service can be private or public, though many governments place restrictions on private systems. Since the mid-19th century, national postal sys ...
. the
Universal Postal Union The Universal Postal Union (UPU, french: link=no, Union postale universelle), established by the Treaty of Bern of 1874, is a specialized agency of the United Nations (UN) that coordinates postal policies among member nations, in addition to ...
lists 160 countries which require the use of a postal code. Although postal codes are usually assigned to geographical areas, special codes are sometimes assigned to individual addresses or to institutions that receive large volumes of mail, such as government agencies and large commercial companies. One example is the French CEDEX system.


Terms

There are a number of synonyms for postal code; some are country-specific; *
CAP A cap is a flat headgear, usually with a visor. Caps have crowns that fit very close to the head. They made their first appearance as early as 3200 BC. Caps typically have a visor, or no brim at all. They are popular in casual and informal se ...
: The standard term in Italy; CAP is an acronym for ''codice di avviamento postale'' (postal expedition code). * CEP: The standard term in Brazil; CEP is an acronym for ''código de endereçamento postal'' (postal addressing code). * Eircode: The standard term in Ireland. * NPA in French-speaking Switzerland (''numéro postal d'acheminement'') and
Italian-speaking Switzerland The four national languages of Switzerland are German, French, Italian, and Romansh. German, French, and Italian maintain equal status as official languages at the national level within the Federal Administration of the Swiss Confederation, ...
(''numero postale di avviamento''). *
PIN A pin is a device used for fastening objects or material together. Pin or PIN may also refer to: Computers and technology * Personal identification number (PIN), to access a secured system ** PIN pad, a PIN entry device * PIN, a former Dutch ...
: The standard term in India; PIN is an acronym for Postal Index Number. Sometimes called a PIN code. * PLZ: The standard term in Germany, Austria,
German-speaking Switzerland The German-speaking part of Switzerland (german: Deutschschweiz, french: Suisse alémanique, it, Svizzera tedesca, rm, Svizra tudestga) comprises about 65 percent of Switzerland (North Western Switzerland, Eastern Switzerland, Central Switz ...
and
Liechtenstein Liechtenstein (), officially the Principality of Liechtenstein (german: link=no, Fürstentum Liechtenstein), is a German-speaking microstate located in the Alps between Austria and Switzerland. Liechtenstein is a semi-constitutional monarch ...
; PLZ is an abbreviation of ''Postleitzahl'' (postal routing number). * Postal code: The general term is used in Canada. * Postcode: This solid compound is popular in many English-speaking countries and is also the standard term in the Netherlands. * Postal index: This term is used in Eastern European countries such as Ukraine, Moldova, Belarus etc. * PSČ: The standard term in Slovakia and Czech Republic; PSČ is an acronym for ''Poštové smerovacie číslo'' (in Slovak) or ''Poštovní směrovací číslo'' (in Czech), both meaning postal routing number. * ZIP Code: The standard term in the United States and the Philippines; ZIP is an
acronym An acronym is a word or name formed from the initial components of a longer name or phrase. Acronyms are usually formed from the initial letters of words, as in ''NATO'' (''North Atlantic Treaty Organization''), but sometimes use syllables, as ...
for ''Zone Improvement Plan''.


History

The development of postal codes reflects the increasing complexity of postal delivery as populations grew and the
built environment The term built environment refers to human-made conditions and is often used in architecture, landscape architecture, urban planning, public health, sociology, and anthropology, among others. These curated spaces provide the setting for human a ...
became more complex. This happened first in large cities. Postal codes began with postal district numbers (or postal zone numbers) within large cities.
London London is the capital and largest city of England and the United Kingdom, with a population of just under 9 million. It stands on the River Thames in south-east England at the head of a estuary down to the North Sea, and has been a majo ...
was first subdivided into 10 districts in 1857 (EC (East Central), WC (West Central), N, NE, E, SE, S, SW, W, and NW), four were created to cover
Liverpool Liverpool is a city and metropolitan borough in Merseyside, England. With a population of in 2019, it is the 10th largest English district by population and its metropolitan area is the fifth largest in the United Kingdom, with a popul ...
in 1864 and
Manchester Manchester () is a city in Greater Manchester, England. It had a population of 552,000 in 2021. It is bordered by the Cheshire Plain to the south, the Pennines to the north and east, and the neighbouring city of Salford to the west. The t ...
/
Salford Salford () is a city and the largest settlement in the City of Salford metropolitan borough in Greater Manchester, England. In 2011, Salford had a population of 103,886. It is also the second and only other city in the metropolitan county afte ...
was split into eight numbered districts in 1867/68. By
World War I World War I (28 July 1914 11 November 1918), often abbreviated as WWI, was one of the deadliest global conflicts in history. Belligerents included much of Europe, the Russian Empire, the United States, and the Ottoman Empire, with fightin ...
, such postal district or zone numbers also existed in various large European cities. They existed in the United States at least as late as the 1920s, possibly implemented at the local post office level only (for example, instances of "Boston 9, Mass" in 1920 are attested) although they were evidently not used throughout all major US cities (implemented USPOD-wide) until
World War II World War II or the Second World War, often abbreviated as WWII or WW2, was a world war that lasted from 1939 to 1945. It involved the vast majority of the world's countries—including all of the great powers—forming two opposin ...
. By 1930 or earlier the idea of extending postal district or zone numbering plans beyond large cities to cover even small towns and rural locales was in the air. These developed into postal codes as they are defined today. The name of US postal codes, "ZIP codes", reflects this evolutionary growth from a zone plan to a zone improvement plan, "ZIP". Modern postal codes were first introduced in the
Ukrainian Soviet Socialist Republic The Ukrainian Soviet Socialist Republic ( uk, Украї́нська Радя́нська Соціалісти́чна Респу́бліка, ; russian: Украи́нская Сове́тская Социалисти́ческая Респ ...
in December 1932, but the system was abandoned in 1939. The next country to introduce postal codes was Germany in 1941, followed by Singapore in 1950, Argentina in 1958, the United States in 1963 and Switzerland in 1964. The United Kingdom began introducing its current system in Norwich in 1959, but they were not used nationwide until 1974.


Presentation


Character sets

The characters used in postal codes are: * The
Western Arabic numerals Arabic numerals are the ten numerical digits: , , , , , , , , and . They are the most commonly used symbols to write decimal numbers. They are also used for writing numbers in other systems such as octal, and for writing identifiers such as ...
"0" to "9" * Letters of the
ISO basic Latin alphabet The ISO basic Latin alphabet is an international standard (beginning with ISO/IEC 646) for a Latin-script alphabet that consists of two sets (uppercase and lowercase) of 26 letters, codified in various national and international standards and ...
* Spaces, hyphens


Reserved characters

Postal codes in the Netherlands Postal codes in the Netherlands, known as ''postcodes'', are alphanumeric, consisting of four digits followed by two uppercase letters. The letters 'F', 'I', 'O', 'Q', 'U' and 'Y' were originally not used for technical reasons, but almost all exi ...
originally did not use the letters 'F', 'I', 'O', 'Q', 'U' and 'Y' for technical reasons. But as almost all existing combinations are now used, these letters were allowed for new locations starting 2005. The letter combinations "SS" (), "SD" (), and "SA" () are not used, due to links with the Nazi occupation in World War II.
Postal codes in Canada A Canadian postal code (french: code postal) is a six-character string that forms part of a postal address in Canada. Like British, Irish and Dutch postcodes, Canada's postal codes are alphanumeric. They are in the format ''A1A 1A1'', where ' ...
do not include the letters D, F, I, O, Q, or U, as the
optical character recognition Optical character recognition or optical character reader (OCR) is the electronic or mechanical conversion of images of typed, handwritten or printed text into machine-encoded text, whether from a scanned document, a photo of a document, a sc ...
(OCR) equipment used in automated sorting could easily confuse them with other letters and digits. The letters W and Z are used, but are not currently used as the first letter. The Canadian Postal Codes use alternate letters and numbers (with a space after the third character) in this format: A9A 9A9 In Ireland the eircode system uses the following letters only: A, C, D, E, F, H, K, N, P, R, T, V, W, X, Y. This serves two purposes: * to avoid confusion in OCR, and * it also helps to avoid accidental double-entendres by avoiding the creation of word look-alikes, as Eircode's last four characters are random.


Alphanumeric postal codes

Most of the postal code systems are numeric; only a few are alphanumeric (i.e., use both letters and digits). Alphanumeric systems can, given the same number of characters, encode many more locations. For example, while a two digit numeric code can represent 100 locations, a two character alphanumeric code using ten numbers and twenty letters can represent 900 locations. The independent nations using alphanumeric postal code systems are: * Argentina ( see table) *
Brunei Brunei ( , ), formally Brunei Darussalam ( ms, Negara Brunei Darussalam, Jawi: , ), is a country located on the north coast of the island of Borneo in Southeast Asia. Apart from its South China Sea coast, it is completely surrounded by t ...
( see table) * Canada ( see table) * Eswatini * Ireland ( see table) *
Jamaica Jamaica (; ) is an island country situated in the Caribbean Sea. Spanning in area, it is the third-largest island of the Greater Antilles and the Caribbean (after Cuba and Hispaniola). Jamaica lies about south of Cuba, and west of His ...
( see table) (suspended in 2007) *
Kazakhstan Kazakhstan, officially the Republic of Kazakhstan, is a transcontinental country located mainly in Central Asia and partly in Eastern Europe. It borders Russia to the north and west, China to the east, Kyrgyzstan to the southeast, Uzbeki ...
(since 2015) *
Malta Malta ( , , ), officially the Republic of Malta ( mt, Repubblika ta' Malta ), is an island country in the Mediterranean Sea. It consists of an archipelago, between Italy and Libya, and is often considered a part of Southern Europe. It lies ...
( see table) * Netherlands ( see table) *
Peru , image_flag = Flag of Peru.svg , image_coat = Escudo nacional del Perú.svg , other_symbol = Great Seal of the State , other_symbol_type = Seal (emblem), National seal , national_motto = "Fi ...
( see table) The postal code format in Peru was updated in February 2011 to be of the format of five digits. *
Somalia Somalia, , Osmanya script: 𐒈𐒝𐒑𐒛𐒐𐒘𐒕𐒖; ar, الصومال, aṣ-Ṣūmāl officially the Federal Republic of SomaliaThe ''Federal Republic of Somalia'' is the country's name per Article 1 of thProvisional Constituti ...
* United Kingdom ( see table) Countries which prefix their postal codes with a fixed group of letters, indicating a country code, include
Andorra , image_flag = Flag of Andorra.svg , image_coat = Coat of arms of Andorra.svg , symbol_type = Coat of arms , national_motto = la, Virtus Unita Fortior, label=none (Latin)"United virtue is stro ...
,
Azerbaijan Azerbaijan (, ; az, Azərbaycan ), officially the Republic of Azerbaijan, , also sometimes officially called the Azerbaijan Republic is a transcontinental country located at the boundary of Eastern Europe and Western Asia. It is a part of th ...
,
Barbados Barbados is an island country in the Lesser Antilles of the West Indies, in the Caribbean region of the Americas, and the most easterly of the Caribbean Islands. It occupies an area of and has a population of about 287,000 (2019 estimate) ...
,
Ecuador Ecuador ( ; ; Quechua: ''Ikwayur''; Shuar: ''Ecuador'' or ''Ekuatur''), officially the Republic of Ecuador ( es, República del Ecuador, which literally translates as "Republic of the Equator"; Quechua: ''Ikwadur Ripuwlika''; Shuar: ''Eku ...
and
Saint Vincent and the Grenadines Saint Vincent and the Grenadines () is an island country in the Caribbean. It is located in the southeast Windward Islands of the Lesser Antilles, which lie in the West Indies at the southern end of the eastern border of the Caribbean Sea w ...
.


Country code prefixes

ISO 3166-1 alpha-2 ISO 3166-1 alpha-2 codes are two-letter country codes defined in ISO 3166-1, part of the ISO 3166 standard published by the International Organization for Standardization (ISO), to represent countries, dependent territories, and special areas of ...
country codes were recommended by the
European Committee for Standardization The European Committee for Standardization (CEN, french: Comité Européen de Normalisation) is a public standards organization whose mission is to foster the economy of the European Single Market and the wider European continent in global t ...
as well as the
Universal Postal Union The Universal Postal Union (UPU, french: link=no, Union postale universelle), established by the Treaty of Bern of 1874, is a specialized agency of the United Nations (UN) that coordinates postal policies among member nations, in addition to ...
to be used in conjunction with postal codes starting in 1994, but they have not become widely used.
Andorra , image_flag = Flag of Andorra.svg , image_coat = Coat of arms of Andorra.svg , symbol_type = Coat of arms , national_motto = la, Virtus Unita Fortior, label=none (Latin)"United virtue is stro ...
,
Azerbaijan Azerbaijan (, ; az, Azərbaycan ), officially the Republic of Azerbaijan, , also sometimes officially called the Azerbaijan Republic is a transcontinental country located at the boundary of Eastern Europe and Western Asia. It is a part of th ...
,
Barbados Barbados is an island country in the Lesser Antilles of the West Indies, in the Caribbean region of the Americas, and the most easterly of the Caribbean Islands. It occupies an area of and has a population of about 287,000 (2019 estimate) ...
,
Ecuador Ecuador ( ; ; Quechua: ''Ikwayur''; Shuar: ''Ecuador'' or ''Ekuatur''), officially the Republic of Ecuador ( es, República del Ecuador, which literally translates as "Republic of the Equator"; Quechua: ''Ikwadur Ripuwlika''; Shuar: ''Eku ...
,
Latvia Latvia ( or ; lv, Latvija ; ltg, Latveja; liv, Leţmō), officially the Republic of Latvia ( lv, Latvijas Republika, links=no, ltg, Latvejas Republika, links=no, liv, Leţmō Vabāmō, links=no), is a country in the Baltic region of ...
and
Saint Vincent and the Grenadines Saint Vincent and the Grenadines () is an island country in the Caribbean. It is located in the southeast Windward Islands of the Lesser Antilles, which lie in the West Indies at the southern end of the eastern border of the Caribbean Sea w ...
use the
ISO 3166-1 alpha-2 ISO 3166-1 alpha-2 codes are two-letter country codes defined in ISO 3166-1, part of the ISO 3166 standard published by the International Organization for Standardization (ISO), to represent countries, dependent territories, and special areas of ...
as a prefix in their postal codes. In some countries (such as in continental Europe, where a numeric postcode format of four or five digits is commonly used) the numeric postal code is sometimes prefixed with a
country code Country codes are short alphabetic or numeric geographical codes (geocodes) developed to represent countries and dependent areas, for use in data processing and communications. Several different systems have been developed to do this. The term ...
when sending international mail to that country.


Placement of the code

Postal services have their own formats and placement rules for postal codes. In most English-speaking countries, the postal code forms the last item of the address, following the city or town name, whereas in most continental European countries it precedes the name of the city or town. When it follows the city it may be on the same line or on a new line. In
Belarus Belarus,, , ; alternatively and formerly known as Byelorussia (from Russian ). officially the Republic of Belarus,; rus, Республика Беларусь, Respublika Belarus. is a landlocked country in Eastern Europe. It is bordered by ...
,
Kyrgyzstan Kyrgyzstan,, pronounced or the Kyrgyz Republic, is a landlocked country in Central Asia. Kyrgyzstan is bordered by Kazakhstan to the north, Uzbekistan to the west, Tajikistan to the south, and the People's Republic of China to the ea ...
, Russia,
Turkmenistan Turkmenistan ( or ; tk, Türkmenistan / Түркменистан, ) is a country located in Central Asia, bordered by Kazakhstan to the northwest, Uzbekistan to the north, east and northeast, Afghanistan to the southeast, Iran to the sout ...
it is written at the beginning of an address. In
Japan Japan ( ja, 日本, or , and formally , ''Nihonkoku'') is an island country in East Asia. It is situated in the northwest Pacific Ocean, and is bordered on the west by the Sea of Japan, while extending from the Sea of Okhotsk in the north ...
it is written at the start of the address when written in Japanese, but at the end when the address is written in the Latin alphabet.


Geographic coverage

Postal codes are usually assigned to geographical areas. Sometimes codes are assigned to individual addresses or to institutions that receive large volumes of mail, e.g. government agencies or large commercial companies. One example is the French Cedex system.


Postal zone numbers

Before postal codes as described here were used, large cities were often divided into postal zones or postal districts, usually numbered from 1 upwards within each city. The newer postal code systems often incorporate the old zone numbers, as with London postal district numbers, for example. Ireland still uses postal district numbers in
Dublin Dublin (; , or ) is the capital and largest city of Ireland. On a bay at the mouth of the River Liffey, it is in the province of Leinster, bordered on the south by the Dublin Mountains, a part of the Wicklow Mountains range. At the 2016 c ...
. In New Zealand,
Auckland Auckland (pronounced ) ( mi, Tāmaki Makaurau) is a large metropolitan city in the North Island of New Zealand. The List of New Zealand urban areas by population, most populous urban area in the country and the List of cities in Oceania by po ...
,
Wellington Wellington ( mi, Te Whanganui-a-Tara or ) is the capital city of New Zealand. It is located at the south-western tip of the North Island, between Cook Strait and the Remutaka Range. Wellington is the second-largest city in New Zealand by me ...
and
Christchurch Christchurch ( ; mi, Ōtautahi) is the largest city in the South Island of New Zealand and the seat of the Canterbury Region. Christchurch lies on the South Island's east coast, just north of Banks Peninsula on Pegasus Bay. The Avon Rive ...
were divided into postal zones, but these fell into disuse, and have now become redundant as a result of a new postcode system being introduced.


Codes defined along administrative borders

Some postal code systems, like those of
Ecuador Ecuador ( ; ; Quechua: ''Ikwayur''; Shuar: ''Ecuador'' or ''Ekuatur''), officially the Republic of Ecuador ( es, República del Ecuador, which literally translates as "Republic of the Equator"; Quechua: ''Ikwadur Ripuwlika''; Shuar: ''Eku ...
and Costa Rica, show an exact agreement with the hierarchy of administrative
country subdivisions Administrative division, administrative unit,Article 3(1). country subdivision, administrative region, subnational entity, constituent state, as well as many similar terms, are generic names for geographical areas into which a particular, ind ...
. Format of six digit numeric (eight digit alphanumeric)
postal codes in Ecuador Postal codes in Ecuador have six numeric digits. The first two specify the province, the next two the district and the final two the zip code. For example, in the postal code 170515, 17 is Pichincha Province, 05 is the district and 15 the ZIP. Exte ...
, introduced in December 2007: ECAABBCC : EC -
ISO 3166-1 alpha-2 ISO 3166-1 alpha-2 codes are two-letter country codes defined in ISO 3166-1, part of the ISO 3166 standard published by the International Organization for Standardization (ISO), to represent countries, dependent territories, and special areas of ...
country code : AA - one of the 24
provinces of Ecuador Ecuador is divided into 24 provinces ( es, provincias, singular''provincia''). The provinces of Ecuador and their capitals are: List 1 Population as per the census carried out on 2010-11-28 In addition, there were four areas that were non-del ...
(24 of 100 possible codes used = 24%) : BB - one of the 226 cantons of Ecuador (for AABB 226 of 10000 codes used, i.e. 2.26%. Three cantons are not in any province) : CC - one of the
parishes of Ecuador The Parishes of Ecuador ( es, Parroquias) are the third-level administrative units of Ecuador. The Cantons of Ecuador are divided into parishes which are similar to municipalities A municipality is usually a single administrative division hav ...
. Format of five digit numeric
Postal codes in Costa Rica Postal codes in Costa Rica are five digit numeric, and were introduced in March 2013, they are associated with and identifies a unique district in the country. They are managed by the Correos de Costa Rica, a government controlled institution that p ...
, introduced in 2007: ABBCC : A - one of the seven
provinces of Costa Rica According to Article 168 of the Constitution of Costa Rica, the political divisions are officially classified into 3 tiers of sub-national entities. Overview The Constitution of Costa Rica states, ''"For Public Administration purposes, the natio ...
(7 of 10 used, i.e. 70%) : BB - one of the 81
cantons of Costa Rica Costa Rica is administratively divided into seven provinces which are subdivided into 83 cantons, and these are further subdivided into districts. Cantons are the only administrative division in Costa Rica that possess local government in the f ...
(81 of 100 used, i.e. 81%) : CC - one of the
districts of Costa Rica According to the Territorial Administrative Division the cantons of Costa Rica are subdivided into 488 districts (''distritos''), each of which has a unique five digit postal code. Government organization Each canton is divided into district ...
. In Costa Rica these codes were originally used as district identifiers by the
National Institute of Statistics and Census of Costa Rica The National Institute of Statistics and Census of Costa Rica (''Instituto Nacional de Estadística y Censos de Costa Rica'', or ''INEC'', in Spanish) is the governmental institution entrusted with the running of censuses and official surveys in t ...
and the Administrative Territorial Division, and continue to be equivalent. The first two digits of the
postal codes in Turkey Postal codes in Turkey ( tr, Posta kodu) consist of five digits starting with the two digit license plate code of the provinces followed by three digits to specify the location within the districts of the province. See also * ISO 3166-2:TR Ex ...
correspond to the
provinces A province is almost always an administrative division within a country or state. The term derives from the ancient Roman '' provincia'', which was the major territorial and administrative unit of the Roman Empire's territorial possessions ou ...
and each province has assigned only one number. They are the same for them as in ISO 3166-2:TR. The first two digits of the
postal codes in Vietnam Postal codes in Vietnam have five digits. The exact postal code designated for local government areas, local post offices, government offices or embassies and consulates can be searched oNational Postal Code Website References External link ...
indicate a
province A province is almost always an administrative division within a country or state. The term derives from the ancient Roman '' provincia'', which was the major territorial and administrative unit of the Roman Empire's territorial possessions ou ...
. Some provinces have one, other have several two digit numbers assigned. The numbers differ from the number used in ISO 3166-2:VN.


Codes defined close to administrative boundaries

In France the numeric code for the departments is used as the first two digits of the postal code, except for the two departments in Corsica that have codes 2A and 2B and use 20 as postal code. Furthermore, the codes are only the codes for the department in charge of delivery of the post, so it can be that a location in one department has a postal code starting with the number of a neighbouring department.


Codes defined indirectly to administrative borders

The first digit of the postal codes in the United States comprises discrete states. From the first three digits one can infer the state, with a few exceptions where an area is served by a central office in an adjacent state. Similarly, in
Canada Canada is a country in North America. Its ten provinces and three territories extend from the Atlantic Ocean to the Pacific Ocean and northward into the Arctic Ocean, covering over , making it the world's second-largest country by tot ...
, the first letter indicates the province or territory, although the provinces of
Quebec Quebec ( ; )According to the Canadian government, ''Québec'' (with the acute accent) is the official name in Canadian French and ''Quebec'' (without the accent) is the province's official name in Canadian English is one of the thirtee ...
and
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 ...
are divided into several lettered sub-regions (e.g. H for
Montreal Montreal ( ; officially Montréal, ) is the List of the largest municipalities in Canada by population, second-most populous city in Canada and List of towns in Quebec, most populous city in the Provinces and territories of Canada, Canadian ...
and Laval), and the Northwest Territories and Nunavut share the letter X.


Codes defined independently from administrative areas

The first two digits of the
postal codes in Germany Germany introduced postal codes on 25 July 1941, in the form of a two-digit system that was applied initially for the parcel service and later for all mail deliveries. This system was replaced in 1962 in West Germany by a four-digit system; three ...
define areas independently of administrative regions. The coding space of the first digit is fully used (0-9); that of the first two combined is utilized to 89%, i.e. there are 89 postal zones defined. Zone 11 is non-geographic. Royal Mail designed the
postal codes in the United Kingdom Postal codes used in the United Kingdom, British Overseas Territories and Crown dependencies are known as postcodes (originally, postal codes). They are alphanumeric and were adopted nationally between 11 October 1959 and 1974, having been dev ...
mostly for efficient distribution. Nevertheless, people associated codes with certain areas, leading to some people wanting or not wanting to have a certain code. See also
postcode lottery In the United Kingdom, the postcode lottery is the unequal provision of services such as healthcare, education and insurance prices depending on the geographic area or postcode. Postcodes can directly affect the services an area can obtain, such ...
. In Brazil the 8-digit postcodes are an evolution of the five-digit area postal codes. In the 1990s the Brazilian five-digit postal code (illustrated), DDDDD, received a three-digit suffix DDDDD-SSS, but this suffix is not directly related to the administrative district hierarchy. The suffix was created only for logistic reasons. QuadrasExemplo-CEP.png, City blocks surrounded by streets, some streets with a different eight-digit postal code (suffixes 001 to 899). QuadraExemplo-CEP.png, Faces of a city block and their extension into its interior. Each color is an eight-digit postal code, usually assigned to a side (odd or even numbered) of a street. QuadraFaces-CEP.png, Faces of a city block and their extension between city blocks. The same colors (polygons) indicate the same postal codes. 220px, In the code spatialization it is an error to associate the postal code to an individual ''land lot'' area: a lot may have 0, 1, 2 or more delivery points, with different codes. The postal code assignment can be assigned to individual land lots in some special cases — in Brazil they are named "large receivers" and receive suffixes 900–959. In any other case it is an error to associate the postal code with the whole land lot area (illustrated). A postal code is often related to a land lot, but this is not always the case. Postal codes are usually related to access points on streets. Small or middle-sized houses, in general, only have a single main gate which is the delivery point. Parks, large businesses such as shopping centers, and big houses, may have more than one entrance and more than one delivery point. So the semantic of an address and its postal code can vary, and one land lot may have more than one postal code.


Precision


Czechoslovakia

Czechoslovakia introduced Postal Routing Numbers (PSČ - poštovní směrovací čísla) in 1973. The code consists of 5 digits formatted into two groups: NNN NN. Originally, the first group marked a district transport centre, the second group represented the order of post offices on the collection route. In the first group, the first digit corresponds partly with the region, the second digit meant a collection transport node (sběrný přepravní uzel, SPU) and the third digit a "district transport node" (okresní přepravní uzel). However, processing was later centralized and mechanized while codes remained the same. After separation Slovakia and the Czech Republic kept the system. Codes with an initial digit of 1, 2, 3, 4, 5, 6, or 7 are used in the Czech Republic, while codes with an initial digit of 8, 9, or 0 are used in Slovakia A code corresponds to a local postal office. However, some larger companies or organizations have their own post codes. In 2004–2006 there were some efforts in Slovakia to reform the system, to get separate post codes for every district of single postmen, but the change was not realized.


India

Postal codes are known as
Postal Index Number A Postal Index Number (PIN; sometimes redundantly a PIN code) refers to a six-digit code in the Indian postal code system used by India Post. On 15 August 2022, the PIN system celebrated its 50th anniversary. History The PIN system was intro ...
s (PINs; sometimes as PIN codes) in India. The PIN system was introduced on 15 August 1972 by India Post. India uses a unique six-digit code as a geographical number to identify locations in India. The format of the PIN is ZSDPPP defined as follows: : Z — Zone : S — Sub-zone : D — Sorting District : P — Service Route : PP — Post Office There are nine total zones consisting of eight regional zones and a functional zone which are represented by the first digit.


Ireland

In Ireland, the new postal code system launched in 2015, known as Eircode provides a unique 7-character alphanumerical code for each individual address. The first three digits are the routing key, which is a postal district and the last four characters are a unique identifier that relates to an individual address (business, house or apartment). A fully developed API is also available for integrating the Eircode database into business databases and logistics systems. With a single exception, these codes are in the format: ANN XXXX The single exception is the Dublin D6W postal district. It is the only routing key area in the country that takes the format ANA instead of ANN: D6W XXXX While it is not intended to replace addresses, in theory simply providing a seven-character Eircode would locate any Irish delivery address. For example, the Irish Parliament Dáil Éireann is: D02 A272


Netherlands

Postal codes in the Netherlands Postal codes in the Netherlands, known as ''postcodes'', are alphanumeric, consisting of four digits followed by two uppercase letters. The letters 'F', 'I', 'O', 'Q', 'U' and 'Y' were originally not used for technical reasons, but almost all exi ...
, known as postcodes, are alphanumeric, consisting of four digits followed by a space and two letters (NNNN AA). Adding the house number to the postcode will identify the address, making the street name and town name redundant. For example: 2597 GV 75 will direct a postal delivery to Theo Mann-Bouwmeesterlaan 75, 's-Gravenhage (the International School of The Hague).


Singapore

Since 1 September 1995, every building in Singapore has been given a unique, six-digit postal code.


United Kingdom

For domestic properties, an individual postcode may cover up to 100 properties in contiguous proximity (e.g. a short section of a populous road, or a group of less populous neighbouring roads). The postcode together with the number or name of a property is not always unique, particularly in rural areas. For example, GL20 8NX/1 might refer to either 1 Frampton Cottages or 1 Frampton Farm Cottages, roughly a quarter of a mile (400 metres) apart. The structure is alphanumeric, with the following six valid formats, as defined by BS 7666: A9 9AA A9A 9AA A99 9AA AA9 9AA AA9A 9AA AA99 9AA There are always two halves: the separation between outward and inward postcodes is indicated by one space. The outward postcode covers a unique area and has two parts which may in total be two, three or four characters in length. A postcode area of one or two letters, followed by one or two numbers, followed in some parts of London by a letter. The outward postcode and the leading numeric of the inward postcode in combination forms a postal sector, and this usually corresponds to a couple of thousand properties. Larger businesses and isolated properties such as farms may have a unique postcode. Extremely large organisations such as larger government offices or bank headquarters may have multiple postcodes for different departments. There are about 100 postcode areas, ranging widely in size from BT which covers the whole of Northern Ireland to WC for a small part of Central London. Postcode areas occasionally cross national boundaries, such as SY which covers a large, predominantly rural area from Shrewsbury and
Ludlow Ludlow () is a market town in Shropshire, England. The town is significant in the history of the Welsh Marches and in relation to Wales. It is located south of Shrewsbury and north of Hereford, on the A49 road which bypasses the town. The ...
in
Shropshire Shropshire (; alternatively Salop; abbreviated in print only as Shrops; demonym Salopian ) is a landlocked historic county in the West Midlands region of England. It is bordered by Wales to the west and the English counties of Cheshire to ...
, England, through to the seaside town of Aberystwyth,
Ceredigion Ceredigion ( , , ) is a county in the west of Wales, corresponding to the historic county of Cardiganshire. During the second half of the first millennium Ceredigion was a minor kingdom. It has been administered as a county since 1282. Cer ...
on
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 ...
' west coast.


United States

In the United States, the basic ZIP Code is composed of five numbers. The first three numbers identify a specific
sectional center facility A destination sectional center facility (SCF) is a processing and distribution center (P&DC) of the United States Postal Service (USPS) that serves a designated geographical area defined by one or more three-digit ZIP Code prefixes. A sectional ...
—or central sorting facility—that serves a geographic region (typically a large part of a state). The next two numbers identify a specific post office either serving an area of a city (if in an urban area or large suburban area) or an entire village, town, or small city and its surrounding area (if in a small suburban or rural area). There is an extended format of the ZIP Code known as the ZIP+4, which contains the basic five-digit ZIP Code, followed by a hyphen and four additional digits. These digits identify a specific delivery route, such as one side of a building, a group of apartments, or several floors of a large office building. Although using the ZIP+4 offers higher accuracy, addressing redundancy, and sorting efficiency within the
USPS The United States Postal Service (USPS), also known as the Post Office, U.S. Mail, or Postal Service, is an independent agency of the executive branch of the United States federal government responsible for providing postal service in the ...
, it is optional and not widely used by the general public. It is primarily only used by business mailers. For high volume business mailers using automated mailing machines, the USPS has promulgated the
Intelligent Mail barcode The Intelligent Mail Barcode (IMb) is a 65-bar barcode for use on mail in the United States. The term "Intelligent Mail" refers to services offered by the United States Postal Service for domestic mail delivery. The IM barcode is intended to provi ...
standard, which is a barcode containing the ZIP+4 code plus a two digit
delivery point In a postal system, a delivery point (sometimes DP) is a single mailbox or other place at which mail is delivered. It differs from a street address, in that each address may have several delivery points, such as an apartment, office department, ...
. This 11-digit number is theoretically a unique identifier for every address in the country.


States and overseas territories sharing a postal code system

French overseas departments and territories use the five-digit French postal code system, each code starting with the three-digit department identifier.
Monaco Monaco (; ), officially the Principality of Monaco (french: Principauté de Monaco; Ligurian: ; oc, Principat de Mónegue), is a sovereign city-state and microstate on the French Riviera a few kilometres west of the Italian region of Lig ...
is also integrated in the French system and has no system of its own. The British Crown Dependencies of Guernsey,
Jersey Jersey ( , ; nrf, Jèrri, label= Jèrriais ), officially the Bailiwick of Jersey (french: Bailliage de Jersey, links=no; Jèrriais: ), is an island country and self-governing Crown Dependency near the coast of north-west France. It is the l ...
and the
Isle of Man ) , anthem = "O Land of Our Birth" , image = Isle of Man by Sentinel-2.jpg , image_map = Europe-Isle_of_Man.svg , mapsize = , map_alt = Location of the Isle of Man in Europe , map_caption = Location of the Isle of Man (green) in Europe ...
are part of the UK postcode system. They use the schemes AAN NAA and AANN NAA, in which the first two letters are a unique code (GY, JE and IM respectively). Most of the Overseas Territories have UK-style postcodes, with a single postcode for each territory or dependency, although they are still treated as international destinations by Royal Mail in the UK, and charged at international rather than UK inland rates. The four other Overseas Territories
Anguilla Anguilla ( ) is a British Overseas Territory in the Caribbean. It is one of the most northerly of the Leeward Islands in the Lesser Antilles, lying east of Puerto Rico and the Virgin Islands and directly north of Saint Martin. The terr ...
,
Bermuda ) , anthem = "God Save the King" , song_type = National song , song = "Hail to Bermuda" , image_map = , map_caption = , image_map2 = , mapsize2 = , map_caption2 = , subdivision_type = Sovereign state , subdivision_name = , es ...
,
British Virgin Islands ) , anthem = "God Save the King" , song_type = Territorial song , song = " Oh, Beautiful Virgin Islands" , image_map = File:British Virgin Islands on the globe (Americas centered).svg , map_caption = , mapsize = 290px , image_map2 = Bri ...
and Cayman Islands have their own separate systems and formats. The Pacific island states of
Palau Palau,, officially the Republic of Palau and historically ''Belau'', ''Palaos'' or ''Pelew'', is an island country and microstate in the western Pacific. The nation has approximately 340 islands and connects the western chain of the ...
,
Marshall Islands The Marshall Islands ( mh, Ṃajeḷ), officially the Republic of the Marshall Islands ( mh, Aolepān Aorōkin Ṃajeḷ),'' () is an independent island country and microstate near the Equator in the Pacific Ocean, slightly west of the Intern ...
and the
Federated States of Micronesia The Federated States of Micronesia (; abbreviated FSM) is an island country in Oceania. It consists of four states from west to east, Yap, Chuuk, Pohnpei and Kosraethat are spread across the western Pacific. Together, the states comprise a ...
remain part of the US ZIP code system, despite having become independent states.
San Marino San Marino (, ), officially the Republic of San Marino ( it, Repubblica di San Marino; ), also known as the Most Serene Republic of San Marino ( it, Serenissima Repubblica di San Marino, links=no), is the fifth-smallest country in the world an ...
and the
Vatican City Vatican City (), officially the Vatican City State ( it, Stato della Città del Vaticano; la, Status Civitatis Vaticanae),—' * german: Vatikanstadt, cf. '—' (in Austria: ') * pl, Miasto Watykańskie, cf. '—' * pt, Cidade do Vati ...
are part of the
Italian Italian(s) may refer to: * Anything of, from, or related to the people of Italy over the centuries ** Italians, an ethnic group or simply a citizen of the Italian Republic or Italian Kingdom ** Italian language, a Romance language *** Regional Ita ...
postcode system, while
Liechtenstein Liechtenstein (), officially the Principality of Liechtenstein (german: link=no, Fürstentum Liechtenstein), is a German-speaking microstate located in the Alps between Austria and Switzerland. Liechtenstein is a semi-constitutional monarch ...
similarly uses the Swiss system, as do the Italian exclave of
Campione d'Italia Campione d'Italia ( Comasco: , ) is a ''comune'' of the Province of Como in the Lombardy region of Italy and an enclave surrounded by the Swiss canton of Ticino (it is also an exclave). At its closest, the enclave is less than from the rest ...
and the German exclave of Büsingen am Hochrhein, although they also form part of their respective countries' postal code systems. The
Czech Republic The Czech Republic, or simply Czechia, is a landlocked country in Central Europe. Historically known as Bohemia, it is bordered by Austria to the south, Germany to the west, Poland to the northeast, and Slovakia to the southeast. The ...
and
Slovakia Slovakia (; sk, Slovensko ), officially the Slovak Republic ( sk, Slovenská republika, links=no ), is a landlocked country in Central Europe. It is bordered by Poland to the north, Ukraine to the east, Hungary to the south, Austria to the s ...
still use the codes of the former
Czechoslovakia , rue, Чеськословеньско, , yi, טשעכאסלאוואקיי, , common_name = Czechoslovakia , life_span = 1918–19391945–1992 , p1 = Austria-Hungary , image_p1 ...
, their ranges not overlapping. In 2004–2006, Slovakia prepared a reform of the system but the plan was postponed and maybe abandoned. In the Czech Republic, there was no significant effort to modify the system.


Non-geographic codes

In the United Kingdom, the non-conforming postal code GIR 0AA was used for the National Girobank until its closure in 2003. A non-geographic series of postcodes, starting with BX, is used by some banks and government departments. :HM Revenue and Customs - VAT Controller :VAT Central Unit :BX5 5AT A fictional address is also used by Royal Mail for letters to Santa Claus, more commonly known as Santa or Father Christmas: :Santa's Grotto :Reindeerland XM4 5HQ Previously, the postcode SAN TA1 was used. In Finland, the special postal code 99999 is for
Korvatunturi Korvatunturi is a fell in Lapland, on the border between Finland and Russia. Its Finnish part is within Urho Kekkonen National Park in the municipality of Savukoski. In Finnish the name ''Korvatunturi'' means "Ear Fell", referring to the mountai ...
, the place where Santa Claus (''Joulupukki'' in
Finnish Finnish may refer to: * Something or someone from, or related to Finland * Culture of Finland * Finnish people or Finns, the primary ethnic group in Finland * Finnish language, the national language of the Finnish people * Finnish cuisine See also ...
) is said to live, although mail is delivered to the
Santa Claus Village Santa Claus Village ( fi, Joulupukin Pajakylä) is an amusement park in Rovaniemi in the Lapland region of Finland. It was opened in 1985. Location and transportation Santa Claus Village is located about northeast of Rovaniemi and about fr ...
in
Rovaniemi Rovaniemi ( , ; sme, Roavvenjárga ; smn, Ruávinjargâ; sms, Ruäʹvnjargg) is a city and municipality of Finland. It is the administrative capital and commercial centre of Finland's northernmost province, Lapland, and its southern part Per ...
. In Canada, the amount of mail sent to Santa Claus increased every
Christmas Christmas is an annual festival commemorating Nativity of Jesus, the birth of Jesus, Jesus Christ, observed primarily on December 25 as a religious and cultural celebration among billions of people Observance of Christmas by country, around t ...
, up to the point that Canada Post decided to start an official Santa Claus letter-response program in 1983. Approximately one million letters come in to Santa Claus each Christmas, including from outside of Canada, and all of them are answered in the same languages in which they are written. Canada Post introduced a special address for mail to Santa Claus, complete with its own postal code: :SANTA CLAUS :NORTH POLE  H0H 0H0 In Belgium
bpost Bpost (stylised ''bpost'') also known as the Belgian Post Group, is the Belgian company responsible for the delivery of national and international mail. The Belgian Post Group is one of the largest civilian employers in Belgium. It provides a r ...
sends a small present to children who have written a letter to
Sinterklaas Sinterklaas () or Sint-Nicolaas () is a legendary figure based on Saint Nicholas, patron saint of children. Other Dutch names for the figure include ''De Sint'' ("The Saint"), ''De Goede Sint'' ("The Good Saint") and ''De Goedheiligman'' ("The ...
. They can use the non-geographic postal code 0612, which refers to the date Sinterklaas is celebrated (6 December), although a fictional town, street and house number are also used. In Dutch, the address is :Sinterklaas :Spanjestraat 1 :0612 Hemel This translates as "1 Spain Street, 0612 Heaven". In French, the street is called "Paradise Street": :Saint-Nicolas :Rue du Paradis 1 :0612 Ciel


Formats


Non-postal uses and economic aspects

While postal codes were introduced to expedite the delivery of mail, they are very useful tools for several other purposes, particularly in countries where codes are very fine-grained and identify just a few addresses. Among uses are: * Finding the nearest branch of an organisation to a given address. A computer program uses the postal codes of the target address and the branches to list the closest branches in order of distance
as the crow flies __NOTOC__ The expression ''as the crow flies'' is an idiom for the most direct path between two points, rather similar to "in a beeline". This meaning is attested from the early 19th century, and appeared in Charles Dickens's 1838 novel ''Oliver ...
(or, if used in conjunction with street map software, road distance). This can be used by companies to inform potential customers where to go, by
job centre An employment agency is an organization which matches employers to employees. In developed countries, there are multiple private businesses which act as employment agencies and a publicly-funded employment agency. Public employment agencies One ...
s to find jobs for job-seekers, to alert people of
town planning Urban planning, also known as town planning, city planning, regional planning, or rural planning, is a technical and political process that is focused on the development and design of land use and the built environment, including air, water, ...
applications in their area, and a great many other applications. * Fine-grained postal codes can be used with
satellite navigation A satellite navigation or satnav system is a system that uses satellites to provide autonomous geo-spatial positioning. It allows satellite navigation devices to determine their location (longitude, latitude, and altitude/elevation) to high pr ...
systems to navigate to an address by street number and postcode. * Geographical sales territories for representatives in the pharmaceutical industry are allocated based on a workload index that is based upon postcode. * Population data can be isolated, grouped and/or organized by postal code for statistical analysis


Availability

The availability of postal code information has significant economic advantages. In some countries, the postal authorities charge for access to the code database. , the United Kingdom Government is consulting on whether to waive licensing fees for some geographical data sets (to be determined) related to UK postcodes.


See also

*
List of postal codes This list shows an overview of postal code notation schemes for all countries that have postal or ZIP Code systems. List ; Legend * A = letter * N = number * ? = letter or number * CC = ISO 3166-1 alpha-2 country code }) formally. The f ...
* :Lists of postal codes * Address#Format by country and area *
Postcode Address File The Postcode Address File (PAF) is a database that contains all known "delivery points" and postcodes in the United Kingdom. The PAF is a collection of over 29 million Royal Mail postal addresses and 1.8 million postcodes. It is available i ...


References


External links

*
Universal Postal Union
*

*



{{DEFAULTSORT:Postal Code Postal systems Ukrainian inventions Soviet inventions