DenverUnited States |
JohannesburgSouth Africa |
649 495
(2013) |
649 495
(2013)
4 434 827
(2011) |
4 434 827
(2011) |
401 km2
|
401 km2
1 644 km2
|
1 644 km2
|
1 619.69
/km2 |
1 619.69/km2
2 697.58/km2
|
2 697.58
/km2 |