Buenos Aires Population 2021

15,257,673
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Buenos Aires's 2021 population is now estimated at 15,257,673. In 1950, the population of Buenos Aires was 5,166,140. Buenos Aires has grown by 103,944 since 2015, which represents a 0.69% annual change. These population estimates and projections come from the latest revision of the UN World Urbanization Prospects. These estimates represent the Urban agglomeration of Buenos Aires, which typically includes Buenos Aires's population in addition to adjacent suburban areas.

Buenos Aires is the largest city and capital of Argentina, and the second largest metropolitan area in South America. It sits along the western shore of the Rio de la Plata estuary and is not a part of Buenos Aires Province or the capital of the Province; Buenos Aires is an autonomous district that was granted autonomy in 1994. Its official name is Ciudad Autónoma de Buenos Aires or the Autonomous City of Buenos Aires. In 2016, the estimated population of Buenos Aires is 2,891,000.

In 2010, Buenos Aires had an official population of 2.89 million in the city proper, which has grown very modestly to an estimated 2,891,000 in 2016. The metropolitan population jumps to just over 13.5 million and includes an area of over 3,800 square kilometers.

Population Density

The city has a density of about 13,680 people per square kilometer (34,800/square mile), but this density drops to just 2,400 per square kilometer in the suburbs. The Buenos Aires metropolitan area is home to about 13.5 million people.

Since 1947, the population of Buenos Aires has stayed around 3 million because of slow migration to the surrounding areas and low birth rates, but the neighboring districts have seen fivefold expansion.

Buenos Aires Demographics

As of the last census, the racial composition of Buenos Aires was:

  • White: 88.9%
  • Mestizo: 7%
  • Asian: 2.1%
  • Black: 2%

Most of the population is of European descent, with the most common ethnic origin groups being Italian and Spanish. Interestingly, Buenos Aires has the largest Jewish community in Latin America, and the second largest in the Americas.

The census in 2001 also showed that Buenos Aires has a somewhat aged population, as 22% of the population was over 60 years old. This is pretty comparable to most European cities, however, but Buenos Aires is older than Argentines as a whole.

The largest religion in Buenos Aires is Roman Catholicism. The former Archbishop of Buenos Aires, Jorge Bergoglio, was even elected Pope for the Roman Catholic Church in 2013. It's believed around 20% of the city's population is a practicing Catholic. There are also Jewish, Protestant, Orthodox and Muslim communities in Buenos Aires, which is home to the largest mosque in the continent.

Buenos Aires History

The first European to reach the Rio de la Plata was a Spaniard named Juan Diaz de Solis in 1516. He was later killed by a native Charrua tribe in present-day Uruguay.

Buenos Aires was established as Ciudad de Nuestra Señora Santa María del Buen Ayre, or City of Our Lady Saint Mary of the Fair Winds, in 1536 by a Spanish expedition headed by Pedro de Mendoza, and this settlement was in the present day San Telmo district of Buenos Aires.

Settlers were pushed away from attacks by indigenous people, and the site was eventually abandoned just six years after its founding. A second establishment was created in 1580, called Santisima Trinidad, and its port became Puerto de Santa María de los Buenos Aires.

Buenos Aires had a trade-dominated economy from the start, and during the 17th and 18th century, ships from Spain were plagued by pirates. They eventually developed a complicated system where ships with military protection left to Central America, crossed land to Lima, Peru and then to the inner cities. Products took a long time to reach Buenos Aires, and taxes became cost-prohibitive.

Buenos Aires was officially declared an open port in the late 1700s to ease trade restrictions. When the British invaded the Rio de la Plata, the city was attacked twice and successfully invaded in 1806. During this invasion, Spain left the city to its fate and the citizens took up arms to defend the city. When Spain was invaded by Bonaparte two years later, the Buenos Aires people decided they had seen enough of rule under Spain and established an independent government in 1810, although formal independence didn't come for another six years.

Throughout the 19th century, Buenos Aires attracted hundreds of thousands of immigrants, and the city grew massively. The country experienced a revival in the 1990s and a cultural revival in the 1980s with a return of democracy, and despite slow growth, Buenos Aires is still one of the largest and most populous cities in the world.

Buenos Aires Population Growth

While still a major tourist destination, Buenos Aires has experienced a stagnating economy over the last few years. While the economic decline is not as apparent in Buenos Aires as it is in Argentina as a whole, its dense city population is slowly moving to the suburbs.

The city is still growing, although not in huge numbers, and Greater Buenos Aires is expected to have a population of 13.6 million by 2025, and 14 million by 2030.

Buenos Aires Population 2021

Year Population Growth Rate Growth
203517,127,7400.77%130,576
203416,997,1640.79%132,542
203316,864,6220.80%134,461
203216,730,1610.82%136,213
203116,593,9480.84%137,833
203016,456,1150.86%140,356
202916,315,7590.88%142,058
202816,173,7010.89%142,060
202716,031,6410.89%141,013
202615,890,6280.88%138,353
202515,752,2750.86%133,987
202415,618,2880.83%127,873
202315,490,4150.78%120,496
202215,369,9190.74%112,246
202115,257,6730.69%103,944
202015,153,7290.64%96,456
201915,057,2730.61%90,743
201814,966,5300.59%87,430
201714,879,1000.59%86,919
201614,792,1810.59%86,648
201514,705,5330.59%86,023
201414,619,5100.59%85,519
201314,533,9910.59%84,903
201214,449,0880.59%84,639
201114,364,4490.83%118,578
201014,245,8711.34%188,172
200914,057,6991.34%185,432
200813,872,2671.34%183,488
200713,688,7791.34%180,814
200613,507,9651.34%178,425
200513,329,5401.34%175,827
200413,153,7131.34%173,983
200312,979,7301.34%171,448
200212,808,2821.27%160,290
200112,647,9921.15%144,121
200012,503,8711.16%142,870
199912,361,0011.15%141,044
199812,219,9571.15%139,435
199712,080,5221.15%137,655
199611,942,8671.16%136,460
199511,806,4071.15%134,716
199411,671,6911.15%133,179
199311,538,5121.15%131,479
199211,407,0331.16%130,337
199111,276,6961.16%129,130
199011,147,5661.16%127,718
198911,019,8481.16%126,082
198810,893,7661.16%124,981
198710,768,7851.16%123,378
198610,645,4071.16%121,965
198510,523,4421.16%120,402
198410,403,0401.16%119,351
198310,283,6891.16%117,820
198210,165,8691.16%116,471
198110,049,3981.31%129,617
19809,919,7811.65%160,593
19799,759,1881.64%157,777
19789,601,4111.64%155,227
19779,446,1841.64%152,508
19769,293,6761.65%150,457
19759,143,2191.64%147,819
19748,995,4001.64%145,429
19738,849,9711.64%142,883
19728,707,0881.65%140,960
19718,566,1281.78%149,958
19708,416,1702.20%181,166
19698,235,0042.20%177,023
19688,057,9812.20%173,691
19677,884,2902.20%169,716
19667,714,5742.20%166,063
19657,548,5112.20%162,267
19647,386,2442.20%159,212
19637,227,0322.20%155,568
19627,071,4642.20%152,219
19616,919,2452.33%157,408
19606,761,8372.73%179,799
19596,582,0382.73%174,781
19586,407,2572.73%170,140
19576,237,1172.72%165,397
19566,071,7202.73%161,449
19555,910,2712.73%156,943
19545,753,3282.73%152,775
19535,600,5532.72%148,517
19525,452,0362.73%144,971
19515,307,0652.73%140,925
19505,166,1400.00%

Buenos Aires Population Data (Urban Area)

Name 2021 Population 2021 Growth
Buenos Aires15,257,6730.69%
Cordoba1,584,5990.81%
Rosario1,553,5301.40%
Mendoza1,191,4701.61%
San Miguel De Tucuman999,9071.45%
La Plata894,1591.14%
Salta696,7151.75%
Mar Del Plata672,1160.96%
Santa Fe569,9911.26%
San Juan541,3660.83%
Santiago Del Estero441,7721.42%
Resistencia437,2221.15%
Neuquen Plottier Cipolletti415,5451.70%
Corrientes412,9891.29%
Posadas395,9091.83%
San Salvador De Jujuy365,8901.32%
Bahia Blanca317,5070.63%

Other Cities in Argentina

  1. Buenos Aires Province - Province of Buenos Aires records and information
  2. World Urbanization Prospects - United Nations population estimates and projections of major Urban Agglomerations

Sources