Rio de Janeiro and Buenos Aires
Comparison by area and population

Rio de Janeiro

Brazil

Buenos Aires

Argentina

Population

6 323 037
 (2010)

6 323 037
(2010)

2 891 082
(2010)
2 891 082
 (2010)

Area

1 260 km2

1 260 km2

202 km2
202 km2

Population density

5 018.28
/km2

5 018.28/km2

14 312.30/km2
14 312.30
 /km2
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