Cologne and Hangzhou
Comparison by area and population

Cologne

Germany

Hangzhou

China

Population

1 017 155
 (2011)

1 017 155
(2011)

8 700 000
(2010)
8 700 000
 (2010)

Area

405 km2

405 km2

16 847 km2
16 847 km2

Population density

2 511.49
/km2

2 511.49/km2

516.41/km2
516.41
 /km2
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