| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density (/mi²) | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Williamston | 1 | 5,052 | 5,222 | -0.67% | 1,120 | 5 | Town |
| Robersonville | 2 | 1,228 | 1,272 | -0.73% | 1,013 | 1 | Town |
| Jamesville | 3 | 408 | 420 | -0.73% | 280 | 1 | Town |
| Hamilton | 4 | 295 | 303 | -0.67% | 597 | 0 | Town |
| Oak City | 5 | 264 | 272 | -0.75% | 263 | 1 | Town |
| Parmele | 6 | 246 | 246 | 0% | 212 | 1 | Town |
| Everetts | 7 | 143 | 146 | -0.69% | 290 | 0 | Town |
| Hassell | 8 | 46 | 48 | -2.13% | 173 | 0 | Town |
Williamston is the largest city in Martin County, with a population of 5,052.
Hassell is the smallest city in Martin County, with a population of 46.
There are 8 cities in Martin County, North Carolina.