QingdaoChina |
PittsburghUnited States |
2 755 500
(2007) |
2 755 500
(2007)
312 819
(2006) |
312 819
(2006) |
10 654 km2
|
10 654 km2
151 km2
|
151 km2
|
258.64
/km2 |
258.64/km2
2 071.65/km2
|
2 071.65
/km2 |