Cologne and Xining
Comparison by area and population

Cologne

Germany

Xining

China

Population

1 017 155
 (2011)

1 017 155
(2011)

2 154 000
(2007)
2 154 000
 (2007)

Area

405 km2

405 km2

7 424 km2
7 424 km2

Population density

2 511.49
/km2

2 511.49/km2

290.14/km2
290.14
 /km2
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