Saint Lucia has 0 cities with more than a million people, 0 cities with between 100,000 and 1 million people, and 2 cities with between 10,000 and 100,000 people. The largest city in Saint Lucia is Castries, with a population of 20,000 people.
| Name | 2021 Population |
|---|---|
| Castries | 20,000 |
| Bisee | 12,980 |
| Vieux Fort | 4,574 |
| Micoud | 3,406 |
| Soufriere | 2,918 |
| Dennery | 2,870 |
| Gros Islet | 2,362 |
| Anse La Raye | 1,256 |
| Laborie | 1,131 |
| Choiseul | 346 |