2 cities
| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Breaux Bridge | 1 | 7,634 | 7,478 | 0.34% | 989 | 8 | City |
| St. Martinville | 2 | 5,148 | 5,390 | -0.77% | 1,624 | 3 | City |
Breaux Bridge is the largest city in St. Martin Parish, with a population of 7,634.
St. Martinville is the smallest city in St. Martin Parish, with a population of 5,148.
There are 2 cities in St. Martin Parish, Louisiana.