PhiladelphiaUnited States |
NanjingChina |
1 526 006
(2010) |
1 526 006
(2010)
8 116 000
(2012) |
8 116 000
(2012) |
367 km2
|
367 km2
6 596 km2
|
6 596 km2
|
4 158.05
/km2 |
4 158.05/km2
1 230.44/km2
|
1 230.44
/km2 |