45 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Salisbury | 1 | 13,959 | 13,627 | 1.01% | 1,248 | 11 | Township |
| Somerset | 2 | 11,801 | 12,062 | 1.86% | 184 | 64 | Township |
| Salisbury | 3 | 11,565 | 11,494 | 0.04% | 277 | 42 | Township |
| Conemaugh | 4 | 6,566 | 6,749 | -0.38% | 159 | 41 | Township |
| Somerset | 5 | 5,826 | 6,044 | -0.75% | 2,135 | 3 | Borough |
| Windber | 6 | 3,777 | 3,927 | -0.79% | 1,919 | 2 | Borough |
| Jenner | 7 | 3,553 | 3,701 | -0.73% | 55 | 65 | Township |
| Paint | 8 | 2,993 | 3,039 | -0.27% | 93 | 32 | Township |
| Somerset | 9 | 2,545 | 2,564 | -0.2% | 79 | 32 | Township |
| Berlin | 10 | 2,449 | 2,483 | -0.41% | 64 | 38 | Township |
| Shade | 11 | 2,365 | 2,449 | -0.71% | 34 | 69 | Township |
| Brothersvalley | 12 | 2,320 | 2,374 | -0.51% | 37 | 63 | Township |
| Elk Lick | 13 | 2,208 | 2,261 | -0.32% | 39 | 57 | Township |
| Summit | 14 | 2,077 | 2,138 | -0.57% | 46 | 45 | Township |
| Stonycreek | 15 | 2,059 | 2,087 | -0.72% | 34 | 61 | Township |
| Meyersdale | 16 | 1,991 | 2,068 | -0.8% | 2,440 | 1 | Borough |
| Berlin | 17 | 1,934 | 1,997 | -0.67% | 2,111 | 1 | Borough |
| Quemahoning | 18 | 1,780 | 1,839 | -0.67% | 50 | 35 | Township |
| Lincoln | 19 | 1,417 | 1,452 | -0.14% | 55 | 26 | Township |
| Boswell | 20 | 1,191 | 1,221 | -0.5% | 1,612 | 1 | Borough |
| Upper Turkeyfoot | 21 | 1,036 | 1,063 | -0.19% | 27 | 39 | Township |
| Central City | 22 | 961 | 1,000 | -0.83% | 1,780 | 1 | Borough |
| Addison | 23 | 906 | 927 | -0.55% | 15 | 61 | Township |
| Black | 24 | 901 | 897 | 0.56% | 21 | 43 | Township |
| Rockwood | 25 | 814 | 841 | -0.73% | 2,437 | 0 | Borough |
| Middlecreek | 26 | 798 | 830 | -0.75% | 24 | 33 | Township |
| Confluence | 27 | 695 | 724 | -0.86% | 434 | 2 | Borough |
| Salisbury | 28 | 677 | 704 | -0.88% | 1,768 | 0 | Borough |
| Jennerstown | 29 | 660 | 678 | -0.6% | 343 | 2 | Borough |
| Allegheny | 30 | 605 | 617 | -0.33% | 12 | 51 | Township |
| Hooversville | 31 | 602 | 627 | -0.82% | 985 | 1 | Borough |
| Lower Turkeyfoot | 32 | 536 | 545 | 0.19% | 15 | 36 | Township |
| Ogle | 33 | 469 | 476 | -0.64% | 13 | 35 | Township |
| Garrett | 34 | 409 | 416 | -0.49% | 808 | 1 | Borough |
| Indian Lake | 35 | 390 | 390 | 0% | 109 | 4 | Borough |
| Stoystown | 36 | 287 | 297 | -0.69% | 1,511 | 0 | Borough |
| Ursina | 37 | 232 | 241 | -0.85% | 258 | 1 | Borough |
| Addison | 38 | 215 | 167 | 4.37% | 395 | 1 | Borough |
| Wellersburg | 39 | 205 | 214 | -0.97% | 253 | 1 | Borough |
| Shanksville | 40 | 188 | 196 | -1.05% | 954 | 0 | Borough |
| Benson | 41 | 177 | 185 | -1.12% | 500 | 0 | Borough |
| Gray | 42 | 169 | 181 | -1.74% | 40 | 4 | Township |
| New Baltimore | 43 | 132 | 137 | -0.75% | 380 | 0 | Borough |
| Fairhope | 44 | 99 | 102 | -1% | 7 | 15 | Township |
| Callimont | 45 | 52 | 55 | -1.89% | 12 | 4 | Borough |
Salisbury is the largest city in Somerset County, with a population of 13,959.
Callimont is the smallest city in Somerset County, with a population of 52.
There are 45 cities in Somerset County, Pennsylvania.