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Postal code 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 numerical digit, digits or both, sometimes including spaces or punctuation, inclu ...
s in
Argentina Argentina, officially the Argentine Republic, is a country in the southern half of South America. It covers an area of , making it the List of South American countries by area, second-largest country in South America after Brazil, the fourt ...
are called '. Argentina first implemented a four-digit postal code system in 1958, aiming to improve mail distribution efficiency. However, it wasn't until 1998 that the more detailed and comprehensive Código Postal Argentino (CPA) system was launched, significantly enhancing both accuracy and efficiency in mail delivery. Until 1998 Argentina employed a four-digit postal code for each municipality, with the first digit representing a region in the country, except in the case of the city of
Buenos Aires Buenos Aires, controlled by the government of the Autonomous City of Buenos Aires, is the Capital city, capital and largest city of Argentina. It is located on the southwest of the Río de la Plata. Buenos Aires is classified as an Alpha− glob ...
(which had different postal codes starting in 1000 and with the other numbers varying according to the zone). The unique codes became the base for the newer system, officially called CPA (', Argentine Postal Code).


Usage

The CPA is not mandatory for private use, but companies that do mass mailings benefit from a discount if they use the CPA. Despite this, the CPA is still not in wide use by private persons, and even government sources and private businesses often list only the base code (the old system). In order to ease the adoption of the new postal code, the former state mail company (') provides a look-up feature on its website. The CPA is intended to improve the quality and speed of mail delivery, but mail without a well-formed CPA will be delivered correctly as well.


Structure

The CPA consists of three parts: *A single letter ( ISO 3166-2:AR) that references the
province A province is an administrative division within a country or sovereign state, state. The term derives from the ancient Roman , which was the major territorial and administrative unit of the Roman Empire, Roman Empire's territorial possessions ou ...
(for example, C for
Capital Federal Buenos Aires, controlled by the government of the Autonomous City of Buenos Aires, is the Capital city, capital and largest city of Argentina. It is located on the southwest of the Río de la Plata. Buenos Aires is classified as an Alpha− glob ...
, Q for
Neuquén Neuquén (; ) is the capital city of the Argentine province of Neuquén and of the Confluencia Department, located in the east of the province. It occupies a strip of land west of the confluence of the Limay and Neuquén rivers which form t ...
). *Four digits (the old postal code or a variation of it on the last digits) showing the town or city. *Three letters, identifying a side of the
city block A city block, residential block, urban block, or simply block is a central element of urban planning and urban design. In a city with a grid system, the block is the smallest group of buildings that is surrounded by streets. City blocks are th ...
where the address is located.


Position 1

The first letter in the CPA, which identifies the province, has its origins in the old Argentine license plates system, which gave each province a letter, usually its initial. Since several provinces share the same initial, a few odd assignments are found (such as X for Córdoba, A for
Salta Salta () is the capital and largest city in the Provinces of Argentina, Argentine province of Salta Province, the same name. With a population of 618,375 according to the 2010 census, it is also the List of cities in Argentina, 7th most-populous ...
, and N for
Misiones Misiones (, ''Missions'') is one of the 23 provinces of Argentina, located in the northeastern corner of the country in the Mesopotamia region. It is surrounded by Paraguay to the northwest, Brazil to the north, east and south, and Corrientes P ...
). See ISO 3166-2:AR for a complete list.


Position 2 to 5

The four digits could be grouped as the following: *1XXX = Buenos Aires City, Buenos Aires Province North (e.g., C1420
Buenos Aires Buenos Aires, controlled by the government of the Autonomous City of Buenos Aires, is the Capital city, capital and largest city of Argentina. It is located on the southwest of the Río de la Plata. Buenos Aires is classified as an Alpha− glob ...
City, B1900
La Plata La Plata () is the capital city of Buenos Aires province, Argentina. According to the 2022 Argentina census, census, the La Plata Partido, Partido has a population of 772,618 and its metropolitan area, the Greater La Plata, has 938,287 inhabit ...
). *2XXX = Santa Fe (e.g., S2000
Rosario Rosario () is the largest city in the central provinces of Argentina, Argentine province of Santa Fe Province, Santa Fe. The city, located northwest of Buenos Aires on the west bank of the Paraná River, is the third-most populous city in the ...
, S2300
Rafaela Rafaela is a city in Argentina, located in the central-west region of the Santa Fe Province. It serves as the head of the Castellanos Department and is the third most populous and significant urban center in the province, following Rosario, Santa ...
). *3XXX = Santa Fe, Entre Ríos, Chaco, Corrientes, Formosa, Misiones (e.g., E3100 Paraná, P3600
Formosa Taiwan, officially the Republic of China (ROC), is a country in East Asia. The island of Taiwan, formerly known to Westerners as Formosa, has an area of and makes up 99% of the land under ROC control. It lies about across the Taiwan Strait f ...
, N3300 Posadas, W3400
Corrientes Corrientes (; Guaraní: Taragui, literally: "Currents") is the capital city of the province of Corrientes, Argentina, located on the eastern shore of the Paraná River, about from Buenos Aires and from Posadas, on National Route 12. It has ...
). *4XXX = Jujuy, Salta, Tucumán, Catamarca, Santiago del Estero (e.g., T4000
San Miguel de Tucumán San Miguel de Tucumán (), usually called simply Tucumán, is the capital and largest city of Tucumán Province, located in northern Argentina from Buenos Aires. It is the fifth-largest city of Argentina after Buenos Aires, Córdoba, Argentin ...
, A4400
Salta Salta () is the capital and largest city in the Provinces of Argentina, Argentine province of Salta Province, the same name. With a population of 618,375 according to the 2010 census, it is also the List of cities in Argentina, 7th most-populous ...
, K4700
San Fernando del Valle de Catamarca San Fernando del Valle de Catamarca () is the capital and largest city in Catamarca Province in northwestern Argentina, on the Río Valle River, at the feet of the Cerro Ambato. The city name is normally shortened as Catamarca and is also kno ...
). *5XXX = Córdoba, La Rioja, San Juan, San Luis, Mendoza (e.g., X5000 Córdoba, M5500 Mendoza, D5700 San Luis, F5300
La Rioja La Rioja () is an autonomous communities in Spain, autonomous community and provinces of Spain, province in Spain, in the north of the Iberian Peninsula. Its capital is Logroño. Other List of municipalities in La Rioja, cities and towns in the ...
). *6XXX = Buenos Aires Province West, La Pampa (e.g., B6000 Junín, L6300 Santa Rosa, L6700 Luján). *7XXX = Buenos Aires Province East, Center and South (e.g., B7000
Tandil Tandil is the main city of the homonymous partido (department), located in Argentina, in the southeast of Buenos Aires Province, just north-northwest of Tandilia hills. The city was founded in 1823, and its name originates from the '' Piedra M ...
, B7600
Mar del Plata Mar del Plata is a city on the coast of the Argentine Sea, Atlantic Ocean, in Buenos Aires Province, Argentina. It is the seat of General Pueyrredón Partido, General Pueyrredón district. Mar del Plata is the second largest city in Buenos Aires ...
, B7400 Olavarría). *8XXX = Buenos Aires Province South, Río Negro, Neuquén (e.g., B8000
Bahía Blanca Bahía Blanca (; English: ''White Bay''), colloquially referred to by its own local inhabitants as simply Bahía, is a city in the Buenos Aires Province, Buenos Aires province of Argentina, centered on the northwestern end of the eponymous Blanc ...
, R8400
Bariloche San Carlos de Bariloche (from the Mapuche name ''Vuriloche'', meaning "people from the other side of the mountain"), commonly known simply as Bariloche (), is the largest city in the Argentine province of Río Negro and the seat of the departm ...
, R8500 Viedma, Q8300
Neuquén Neuquén (; ) is the capital city of the Argentine province of Neuquén and of the Confluencia Department, located in the east of the province. It occupies a strip of land west of the confluence of the Limay and Neuquén rivers which form t ...
). *9XXX = Chubut, Santa Cruz and Tierra del Fuego (e.g., U9000
Comodoro Rivadavia Comodoro Rivadavia (), often shortened to Comodoro ( ), is a city in the Patagonian Provinces of Argentina, province of Chubut Province, Chubut in southern Argentina, located on the San Jorge Gulf, an inlet of the Atlantic Ocean, at the foot of th ...
, U9200
Esquel Esquel is a town in the northwest of Chubut Province in Argentine Patagonia. It is located in Futaleufú Department, of which it is the government seat. Esquel is the home station for “La Trochita,” a historic narrow gauge railway known in En ...
, V9410
Ushuaia Ushuaia ( , ) is the capital city, capital of Tierra del Fuego Province, Argentina, Tierra del Fuego, Antártida e Islas del Atlántico Sur Province, Argentina. With a population of 82,615 and a location below the 54th parallel south latitude, U ...
, Z9400
Río Gallegos Rio or Río is the Portuguese and Spanish word for "river". The word also exists in Italian, but is largely obsolete and used in a poetical or literary context to mean "stream". Rio, RIO or Río may also refer to: Places United States * Rio, Fl ...
).


Position 6 to 8

A combination of three letters that identifies a side of a city block.


References


External links


Official Post Office Zip Code Finder
{{Americas topic, Postal codes in
Postal code 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 numerical digit, digits or both, sometimes including spaces or punctuation, inclu ...
Argentina Argentina, officially the Argentine Republic, is a country in the southern half of South America. It covers an area of , making it the List of South American countries by area, second-largest country in South America after Brazil, the fourt ...