8 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Williamston | 1 | 4,934 | 5,226 | -1.16% | 1,094 | 4.51 | Town |
| Robersonville | 2 | 1,192 | 1,257 | -1.08% | 983 | 1.21 | Town |
| Jamesville | 3 | 402 | 422 | -0.98% | 276 | 1.46 | Town |
| Hamilton | 4 | 290 | 302 | -0.69% | 587 | 0.49 | Town |
| Oak City | 5 | 257 | 269 | -0.77% | 256 | 1 | Town |
| Parmele | 6 | 242 | 252 | -0.82% | 209 | 1.16 | Town |
| Everetts | 7 | 147 | 152 | -0.68% | 298 | 0.49 | Town |
| Hassell | 8 | 46 | 48 | 0% | 173 | 0.27 | Town |
Williamston is the largest city in Martin County, with a population of 4,934.
Hassell is the smallest city in Martin County.
There are 8 cities in Martin County, North Carolina.