| population | |
| Attanagalla Division | 178816 |
| Biyagama Division | 186862 |
| Divulapitiya Division | 143871 |
| Dompe | |
| Gampaha Division | 196445 |
| population | |
| Ja-Ela Division | 201154 |
| Katana Division | 233854 |
| Kelaniya Division | 134693 |
| Mahara Division | 207230 |
| Minuwangoda Division | 178401 |
| population | |
| Mirigama Division | 164166 |
| Negombo Division | 141676 |
| Wattala Division | 174336 |
 | Bandaranaike International Colombo Airport | ~ 13.83 km |
| Dandugama Seaplane Base | ~ 14.39 km |
| Kelani-Peliyagoda Seaplane Base | ~ 21.80 km |
| Diyawanna Oya Seaplane Base | ~ 27.14 km |
| Beira Lake Seaplane Base | ~ 27.80 km |
| Colombo Ratmalana Airport | ~ 36.82 km |
| Katukurunda Air Force Base | ~ 64.67 km |
| Castlereagh Lake Seaplane Base | ~ 71.26 km |
| Polgolla Reservoir Seaplane Base | ~ 73.98 km |
