Mapped: South America’s Biggest Cities in 2025

Mapped: South America’s Most Populated Cities

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South America is home to some of the world’s fastest-growing and most densely populated urban areas.

This map highlights South America’s most populated cities, showing where people are concentrated and how urban growth varies by country.

The data for this visualization comes from World Population Review (2025).

Brazil’s Urban Dominance

Brazil stands out as the continent’s urban heavyweight. São Paulo alone approaches 23 million residents, making it not only South America’s largest city but one of the largest in the world. In fact, São Paulo’s population exceeds that of well-known megacities like Mexico City, Moscow, Beijing, and New York.

Rio de Janeiro follows closely, reinforcing Brazil’s central role in the region’s urban landscape.

Rank	City	Country	Population
1	São Paulo	Brazil	22,990,000
2	Buenos Aires	Argentina	15,752,300
3	Rio de Janeiro	Brazil	13,923,200
4	Bogota	Colombia	11,795,800
5	Lima	Peru	11,517,300
6	Santiago	Chile	6,999,460
7	Belo Horizonte	Brazil	6,351,680
8	Brasilia	Brazil	4,990,930
9	Recife	Brazil	4,344,050
10	Fortaleza	Brazil	4,284,450
11	Porto Alegre	Brazil	4,268,960
12	Medellin	Colombia	4,172,810
13	Salvador	Brazil	4,029,910
14	Curitiba	Brazil	3,889,140
15	Asuncion	Paraguay	3,627,220
16	Campinas	Brazil	3,491,580
17	Guayaquil	Ecuador	3,244,750
18	Caracas	Venezuela	3,015,110
19	Goiania	Brazil	2,927,080
20	Cali	Colombia	2,916,790
21	Belem	Brazil	2,453,800
22	Manaus	Brazil	2,434,640
23	Maracaibo	Venezuela	2,432,440
24	Barranquilla	Colombia	2,396,400
25	Valencia	Venezuela	2,030,790
26	Quito	Ecuador	2,017,260
27	La Paz	Bolivia	1,997,370
28	Santa Cruz de la Sierra	Bolivia	1,955,356
29	Montevideo	Uruguay	1,788,170
30	Cordoba	Argentina	1,640,600
31	Rosario	Argentina	1,631,090
32	Natal	Brazil	1,575,050
33	Cochabamba	Bolivia	1,460,280
34	Joao Pessoa	Brazil	1,447,780
35	Bucaramanga	Colombia	1,411,010
36	Maceio	Brazil	1,387,920
37	Joinville	Brazil	1,374,630
38	Florianopolis	Brazil	1,323,850
39	Barquisimeto	Venezuela	1,281,730
40	Maracay	Venezuela	1,270,320
41	Mendoza	Argentina	1,257,180
42	Guarulhos	Brazil	1,169,577
43	Cartagena	Colombia	1,105,540
44	Aracaju	Brazil	1,081,930
45	Teresina	Brazil	1,068,550
46	San Miguel de Tucuman	Argentina	1,051,040
47	Valparaiso	Chile	1,024,430
48	Nova Iguacu	Brazil	1,002,118
49	Ciudad Guayana	Venezuela	991,388
50	Arequipa	Peru	983,715

Beyond these megacities, Brazil places numerous cities throughout the top 50, including Belo Horizonte, Brasília, Recife, and Fortaleza. Population is not concentrated in a single part of the country, with major cities spread from the south near Uruguay to the north near Venezuela.

Major Hubs Across the Southern Cone

Argentina, Colombia, and Peru also feature prominently. Buenos Aires ranks second overall, with more than 15 million people, reflecting its status as a political, cultural, and financial hub. Colombia places multiple cities on the list, including Bogotá, Medellín, Cali, and Barranquilla.

These cities serve as national anchors for commerce and transportation. Their growth mirrors broader demographic shifts from rural areas into metropolitan regions across the continent.

Rising Cities Beyond the Megacities

While the top five cities dominate by size, many mid-tier cities are rapidly expanding. Places like Santa Cruz de la Sierra, Campinas, and Arequipa illustrate how secondary cities are absorbing population growth as megacities become more saturated.

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• Source: https://www.visualcapitalist.com/mapped-south-americas-biggest-cities-in-2025/