CologneGermany |
RochesterUnited States |
1 017 155
(2011) |
1 017 155
(2011)
210 358
(2013) |
210 358
(2013) |
405 km2
|
405 km2
96 km2
|
96 km2
|
2 511.49
/km2 |
2 511.49/km2
2 191.23/km2
|
2 191.23
/km2 |