Surabaya and Cologne
Comparison by area and population

Surabaya

Indonesia

Cologne

Germany

Population

3 282 156
 (2008)

3 282 156
(2008)

1 017 155
(2011)
1 017 155
 (2011)

Area

374 km2

374 km2

405 km2
405 km2

Population density

8 775.82
/km2

8 775.82/km2

2 511.49/km2
2 511.49
 /km2
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