Buenos Aires and Rio de Janeiro
Comparison by area and population

Buenos Aires

Argentina

Rio de Janeiro

Brazil

Population

2 891 082
 (2010)

2 891 082
(2010)

6 323 037
(2010)
6 323 037
 (2010)

Area

202 km2

202 km2

1 260 km2
1 260 km2

Population density

14 312.30
/km2

14 312.30/km2

5 018.28/km2
5 018.28
 /km2
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