Hangzhou and Cologne
Comparison by area and population

Hangzhou

China

Cologne

Germany

Population

8 700 000
 (2010)

8 700 000
(2010)

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

Area

16 847 km2

16 847 km2

405 km2
405 km2

Population density

516.41
/km2

516.41/km2

2 511.49/km2
2 511.49
 /km2
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