ColumbusUnited States |
PhiladelphiaUnited States |
822 553
(2013) |
822 553
(2013)
1 526 006
(2010) |
1 526 006
(2010) |
550 km2
|
550 km2
367 km2
|
367 km2
|
1 495.55
/km2 |
1 495.55/km2
4 158.05/km2
|
4 158.05
/km2 |