RotterdamNetherlands |
PhiladelphiaUnited States |
617 347
(2012) |
617 347
(2012)
1 526 006
(2010) |
1 526 006
(2010) |
319 km2
|
319 km2
367 km2
|
367 km2
|
1 935.26
/km2 |
1 935.26/km2
4 158.05/km2
|
4 158.05
/km2 |