PhiladelphiaUnited States |
BerneSwitzerland |
1 526 006
(2010) |
1 526 006
(2010)
137 980
(2013) |
137 980
(2013) |
367 km2
|
367 km2
52 km2
|
52 km2
|
4 158.05
/km2 |
4 158.05/km2
2 653.46/km2
|
2 653.46
/km2 |