BarcelonaSpain |
ChengduChina |
1 615 448
(2011) |
1 615 448
(2011)
7 123 000
(2010) |
7 123 000
(2010) |
100 km2
|
100 km2
12 390 km2
|
12 390 km2
|
16 154.50
/km2 |
16 154.50/km2
574.90/km2
|
574.90
/km2 |