| population | |
| Agalawatta Division | 36456 |
| Bandaragama Division | 108889 |
| Beruwala Division | 164507 |
| Bulathsinhala Division | 64635 |
| Dodangoda Division | 63705 |
| population | |
| Horana Division | 112441 |
| Ingiriya Division | 53645 |
| Kalutara Division | 159225 |
| Madurawala Division | 34245 |
| Matugama Division |
| population | |
| Millaniya Division | 52078 |
| Palinda Nuwara Division | |
| Panadura Division | 181724 |
| Walallawita Division |
 | Katukurunda Air Force Base | ~ 14.94 km |
| Bentota River Waterdrome | ~ 22.47 km |
| Colombo Ratmalana Airport | ~ 34.11 km |
| Diyawanna Oya Seaplane Base | ~ 39.95 km |
| Kelani-Peliyagoda Seaplane Base | ~ 43.02 km |
| Beira Lake Seaplane Base | ~ 45.49 km |
| Castlereagh Lake Seaplane Base | ~ 60.35 km |
| Dandugama Seaplane Base | ~ 61.63 km |
| Bandaranaike International Colombo Airport | ~ 68.61 km |
