Colombo and Hanoi
Comparison by area and population

Sri Lanka (capital)

Colombo

Sri Lanka

Vietnam (capital)

Hanoi

Vietnam

Population

672 743
(2007)

672 743
(2007)

6 448 837
(2009)

6 448 837
(2009)

Area

37 km²

37 km²

3 344 km²

3 344 km²

Population density

18 182.20
/km²

18 182.20/km²

1 928.48/km²

1 928.48
/km²

Map

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Colombo and other cities

Hanoi and other cities