St. PetersburgRussian Federation |
ZhangjiakouChina |
5 131 942
(2014) |
5 131 942
(2014)
4 345 491
(2010) |
4 345 491
(2010) |
1 439 km2
|
1 439 km2
36 947 km2
|
36 947 km2
|
3 566.33
/km2 |
3 566.33/km2
117.61/km2
|
117.61
/km2 |