Xi'anChina |
PhiladelphiaUnited States |
7 270 000
(2006) |
7 270 000
(2006)
1 526 006
(2010) |
1 526 006
(2010) |
9 983 km2
|
9 983 km2
367 km2
|
367 km2
|
728.24
/km2 |
728.24/km2
4 158.05/km2
|
4 158.05
/km2 |