SydneyAustralia |
BostonUnited States |
4 800 000
(2012) |
4 800 000
(2012)
625 087
(2011) |
625 087
(2011) |
12 144 km2
|
12 144 km2
232 km2
|
232 km2
|
395.26
/km2 |
395.26/km2
2 694.34/km2
|
2 694.34
/km2 |