St. Martin's 2026 population is now estimated at 6,677. In 1981, the population of St. Martin was 5,842. St. Martin has grown by 10 in the last year, which represents a 0.15% annual change. These population values and projections come from Guernsey parishes and islands populations via CityPopulation and World Population Review Internal Projections .
| City | 2026 Pop. ↓ | Growth |
|---|---|---|
| St. Peter Port | 20,065 | 0.66% |
| Vale | 9,699 | 0.19% |
| St. Sampson | 9,192 | 0.27% |
| Castel | 8,699 | -0.05% |
| St. Martin | 6,677 | 0.15% |
| St. Saviour | 2,864 | 0.42% |
| St. Andrew | 2,319 | -0.13% |
| Alderney | 2,244 | 1.17% |
| St. Pierre du Bois ( St. Peter ) | 1,960 | -0.71% |
| Forest | 1,644 | 0.43% |
| Torteval | 1,032 | 0.19% |
| Sark | 595 | 1.88% |
| Herm & Jethou | 78 | -2.5% |
