PittsburghUnited States |
BeijingChina |
312 819
(2006) |
312 819
(2006)
21 148 000
(2013) |
21 148 000
(2013) |
151 km2
|
151 km2
16 411 km2
|
16 411 km2
|
2 071.65
/km2 |
2 071.65/km2
1 288.65/km2
|
1 288.65
/km2 |