List of cities in Sri Lanka by population. There are 137 cities in Sri Lanka, of which Colombo is the largest in terms of population - 685 309. The total number of people in Sri Lanka is 21 803 078 for 2026.
| # | Name, city | Population |
|---|---|---|
| 1 | Colombo | 685 309 |
| 2 | Dehiwala-Mount Lavinia | 234 574 |
| 3 | Moratuwa | 204 885 |
| 4 | Jaffna | 184 480 |
| 5 | Negombo | 145 069 |
| 6 | Sri Jayawardenepura Kotte | 119 392 |
| 7 | Trincomalee | 126 926 |
| 8 | Kandy | 120 099 |
| 9 | Vavuniya | 108 931 |
| 10 | Kalmunai | 105 045 |
| 11 | Halle | 97 899 |
| 12 | Batticaloa | 97 680 |
| 13 | Katunayaka | 92 490 |
| 14 | Valvettituray | 86 379 |
| 15 | Battaramulla | 85 443 |
| 16 | Dambulla | 77 180 |
| 17 | Maharagama | 75 202 |
| 18 | Daluguma | 74 523 |
| 19 | Kotikavatta | 72 943 |
| 20 | Anuradhapura | 68 254 |
| 21 | Kolonnava | 64 791 |
| 22 | Hyundai | 57 650 |
| 23 | Ratnapura | 51 253 |
| 24 | Puttalam | 50 654 |
| 25 | Badulla | 47 324 |
| 26 | Keselvatta | 46 210 |
| 27 | Matara | 45 744 |
| 28 | Belisarius | 41 773 |
| 29 | Matale | 40 323 |
| 30 | Homagama | 39 178 |
| 31 | Kattankudi | 38 924 |
| 32 | Kalutara | 38 429 |
| 33 | Mulleriyawa | 37 920 |
| 34 | Mannar | 36 513 |
| 35 | Beruwala | 35 131 |
| 36 | Ragama | 34 767 |
| 37 | Candau | 33 827 |
| 38 | Panadura | 33 913 |
| 39 | Dzhaela | 30 740 |
| 40 | Wattala | 30 198 |
| 41 | Peliyagoda | 28 871 |