CologneGermany |
ShenzhenChina |
1 017 155
(2011) |
1 017 155
(2011)
10 357 938
(2010) |
10 357 938
(2010) |
405 km2
|
405 km2
1 989 km2
|
1 989 km2
|
2 511.49
/km2 |
2 511.49/km2
5 207.61/km2
|
5 207.61
/km2 |