12 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Skowhegan | 1 | 8,668 | 8,613 | -0.06% | 147 | 58.84 | Town |
| Fairfield | 2 | 6,540 | 6,490 | 0% | 122 | 53.72 | Town |
| Madison | 3 | 4,858 | 4,725 | 0.46% | 94 | 51.88 | Town |
| Pittsfield | 4 | 3,921 | 3,907 | -0.13% | 81 | 48.18 | Town |
| Norridgewock | 5 | 3,328 | 3,277 | 0.18% | 67 | 49.95 | Town |
| Anson | 6 | 2,327 | 2,290 | 0.21% | 49 | 47.49 | Town |
| Canaan | 7 | 2,208 | 2,191 | 0% | 54 | 41.16 | Town |
| St. Albans | 8 | 2,169 | 2,051 | 1.07% | 48 | 44.79 | Town |
| Palmyra | 9 | 2,057 | 1,926 | 1.33% | 51 | 40.17 | Town |
| Hartland | 10 | 1,981 | 1,699 | 2.7% | 53 | 37.12 | Town |
| Cornville | 11 | 1,373 | 1,314 | 0.81% | 34 | 40.73 | Town |
| Solon | 12 | 1,012 | 0 | 0.8% | 26 | 39.65 | Town |
Skowhegan is the largest city in Somerset County, with a population of 8,668.
Solon is the smallest city in Somerset County.
There are 12 cities in Somerset County, Maine.