Note: As defined by the US Census Bureau, a city's official boundaries often extend miles beyond the city itself and may even cross county lines. As such, several thousand US cities officially exist in two or more counties (and therefore appear on multiple counties' lists of cities.)
City | Rank | 2024 Pop. | 2020 Pop. | Change | Density (/mi²) | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Salisbury township | 1 | 13,548 | 13,627 | -0.14% | 1,211 | 11.2 | Township |
| Salisbury township | 2 | 11,568 | 11,491 | 0.48% | 277 | 41.8 | Township |
| Somerset township | 3 | 11,376 | 12,066 | 0.02% | 177 | 64.2 | Township |
| Conemaugh township | 4 | 6,567 | 6,750 | -0.73% | 159 | 41.3 | Township |
| Somerset | 5 | 5,851 | 6,039 | -0.8% | 2,144 | 2.7 | Borough |
| Windber | 6 | 3,803 | 3,931 | -0.83% | 1,932 | 2.0 | Borough |
| Jenner township | 7 | 3,565 | 3,700 | -1.03% | 55 | 64.6 | Township |
| Paint township | 8 | 2,993 | 3,039 | -0.53% | 93 | 32.3 | Township |
| Somerset township | 9 | 2,576 | 2,590 | 0% | 80 | 32.1 | Township |
| Berlin township | 10 | 2,434 | 2,474 | -0.69% | 63 | 38.5 | Township |
| Shade township | 11 | 2,377 | 2,450 | -0.88% | 35 | 68.7 | Township |
| Brothersvalley township | 12 | 2,329 | 2,372 | -0.56% | 37 | 62.6 | Township |
| Elk Lick township | 13 | 2,195 | 2,258 | -1.04% | 38 | 57.1 | Township |
| Stonycreek township | 14 | 2,110 | 2,086 | 1.15% | 35 | 61.1 | Township |
| Summit township | 15 | 2,090 | 2,140 | -0.52% | 46 | 45.2 | Township |
| Meyersdale | 16 | 1,998 | 2,068 | -0.89% | 2,449 | 0.8 | Borough |
| Berlin | 17 | 1,946 | 2,000 | -0.71% | 2,124 | 0.9 | Borough |
| Quemahoning township | 18 | 1,787 | 1,837 | -0.72% | 51 | 35.3 | Township |
| Lincoln township | 19 | 1,410 | 1,455 | -0.77% | 55 | 25.7 | Township |
| Boswell | 20 | 1,198 | 1,221 | -0.5% | 1,621 | 0.7 | Borough |
| Upper Turkeyfoot township | 21 | 1,031 | 1,063 | -0.96% | 27 | 38.6 | Township |
| Central City | 22 | 963 | 997 | -0.93% | 1,783 | 0.5 | Borough |
| Rockwood | 23 | 822 | 845 | -0.73% | 2,461 | 0.3 | Borough |
| Confluence | 24 | 701 | 724 | -0.85% | 438 | 1.6 | Borough |
| Salisbury | 25 | 682 | 705 | -0.87% | 1,781 | 0.4 | Borough |
| Jennerstown | 26 | 662 | 678 | -0.6% | 344 | 1.9 | Borough |
| Hooversville | 27 | 604 | 627 | -0.98% | 989 | 0.6 | Borough |
| Garrett | 28 | 409 | 416 | -0.49% | 808 | 0.5 | Borough |
| Indian Lake | 29 | 388 | 390 | -0.26% | 109 | 3.6 | Borough |
| Stoystown | 30 | 289 | 299 | -1.03% | 1,521 | 0.2 | Borough |
| Ursina | 31 | 233 | 241 | -0.85% | 259 | 0.9 | Borough |
| Addison | 32 | 214 | 166 | 5.94% | 393 | 0.5 | Borough |
| Wellersburg | 33 | 206 | 213 | -0.96% | 254 | 0.8 | Borough |
| Shanksville | 34 | 190 | 197 | -1.04% | 964 | 0.2 | Borough |
| Benson | 35 | 178 | 185 | -1.11% | 503 | 0.4 | Borough |
| New Baltimore | 36 | 133 | 137 | -0.75% | 383 | 0.3 | Borough |
| Callimont | 37 | 52 | 54 | -1.89% | 12 | 4.4 | Borough |
Note: City markers shown outside the county boundary mean that a part of the city extends into this county, but is primarily located in an adjacent county.
Salisbury township is the largest city in Somerset County.
Callimont is the smallest city in Somerset County.
There are 37 cities in Somerset County, Pennsylvania.