37 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Salisbury township | 1 | 13,529 | 13,627 | -0.14% | 1,210 | 11.18 | Township |
| Salisbury township | 2 | 11,623 | 11,491 | 0.47% | 278 | 41.76 | Township |
| Somerset township | 3 | 11,378 | 12,066 | 0.02% | 177 | 64.20 | Township |
| Conemaugh township | 4 | 6,519 | 6,750 | -0.73% | 158 | 41.29 | Township |
| Somerset | 5 | 5,804 | 6,039 | -0.8% | 2,127 | 2.73 | Borough |
| Windber | 6 | 3,771 | 3,931 | -0.84% | 1,916 | 1.97 | Borough |
| Jenner township | 7 | 3,528 | 3,700 | -1.04% | 55 | 64.62 | Township |
| Paint township | 8 | 2,977 | 3,039 | -0.53% | 92 | 32.26 | Township |
| Somerset township | 9 | 2,576 | 2,590 | 0% | 80 | 32.15 | Township |
| Berlin township | 10 | 2,417 | 2,474 | -0.7% | 63 | 38.45 | Township |
| Shade township | 11 | 2,356 | 2,450 | -0.88% | 34 | 68.72 | Township |
| Brothersvalley township | 12 | 2,316 | 2,372 | -0.56% | 37 | 62.58 | Township |
| Elk Lick township | 13 | 2,172 | 2,258 | -1.05% | 38 | 57.06 | Township |
| Stonycreek township | 14 | 2,134 | 2,086 | 1.14% | 35 | 61.13 | Township |
| Summit township | 15 | 2,079 | 2,140 | -0.53% | 46 | 45.23 | Township |
| Meyersdale | 16 | 1,981 | 2,068 | -0.85% | 2,428 | 0.82 | Borough |
| Berlin | 17 | 1,933 | 2,000 | -0.67% | 2,110 | 0.92 | Borough |
| Quemahoning township | 18 | 1,774 | 1,837 | -0.73% | 50 | 35.33 | Township |
| Lincoln township | 19 | 1,399 | 1,455 | -0.78% | 54 | 25.73 | Township |
| Boswell | 20 | 1,192 | 1,221 | -0.5% | 1,613 | 0.74 | Borough |
| Upper Turkeyfoot township | 21 | 1,021 | 1,063 | -0.97% | 26 | 38.64 | Township |
| Central City | 22 | 955 | 997 | -0.83% | 1,769 | 0.54 | Borough |
| Rockwood | 23 | 816 | 845 | -0.73% | 2,443 | 0.33 | Borough |
| Confluence | 24 | 695 | 724 | -0.86% | 434 | 1.60 | Borough |
| Salisbury | 25 | 676 | 705 | -0.88% | 1,765 | 0.38 | Borough |
| Jennerstown | 26 | 658 | 678 | -0.6% | 342 | 1.92 | Borough |
| Hooversville | 27 | 598 | 627 | -0.99% | 979 | 0.61 | Borough |
| Garrett | 28 | 407 | 416 | -0.49% | 804 | 0.51 | Borough |
| Indian Lake | 29 | 388 | 390 | 0% | 109 | 3.56 | Borough |
| Stoystown | 30 | 287 | 299 | -0.69% | 1,511 | 0.19 | Borough |
| Ursina | 31 | 231 | 241 | -0.86% | 257 | 0.90 | Borough |
| Addison | 32 | 226 | 166 | 5.61% | 415 | 0.54 | Borough |
| Wellersburg | 33 | 204 | 213 | -0.97% | 252 | 0.81 | Borough |
| Shanksville | 34 | 188 | 197 | -1.05% | 954 | 0.20 | Borough |
| Benson | 35 | 176 | 185 | -1.12% | 497 | 0.35 | Borough |
| New Baltimore | 36 | 132 | 137 | -0.75% | 380 | 0.35 | Borough |
| Callimont | 37 | 52 | 54 | 0% | 12 | 4.36 | Borough |
Salisbury township is the largest city in Somerset County, with a population of 13,529.
Callimont is the smallest city in Somerset County.
There are 37 cities in Somerset County, Pennsylvania.