RiyadhSaudi Arabia |
PingdingshanChina |
5 700 000
(2013) |
5 700 000
(2013)
4 838 000
(2007) |
4 838 000
(2007) |
1 554 km2
|
1 554 km2
7 909 km2
|
7 909 km2
|
3 667.95
/km2 |
3 667.95/km2
611.71/km2
|
611.71
/km2 |