59 cities
| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Center | 1 | 11,873 | 11,641 | 0.46% | 780 | 15 | Township |
| Aliquippa | 2 | 8,894 | 9,221 | -0.6% | 2,121 | 4 | City |
| Brighton | 3 | 8,798 | 8,775 | 0.16% | 454 | 19 | Township |
| Beaver Falls | 4 | 8,645 | 8,981 | -0.64% | 4,049 | 2 | City |
| Chippewa | 5 | 8,169 | 8,032 | 0.59% | 521 | 16 | Township |
| New Sewickley | 6 | 6,951 | 7,150 | -0.37% | 213 | 33 | Township |
| Ambridge | 7 | 6,853 | 6,951 | -0.23% | 4,609 | 1 | Borough |
| New Brighton | 8 | 5,454 | 5,643 | -0.57% | 5,285 | 1 | Borough |
| North Sewickley | 9 | 5,428 | 5,485 | 0% | 261 | 21 | Township |
| Monaca | 10 | 5,394 | 5,609 | -0.66% | 2,661 | 2 | Borough |
| Beaver | 11 | 4,291 | 4,425 | -0.51% | 4,684 | 1 | Borough |
| Baden | 12 | 3,770 | 3,899 | -0.55% | 1,667 | 2 | Borough |
| Clinton | 13 | 3,681 | 3,716 | 0.88% | 134 | 27 | Township |
| Rochester | 14 | 3,339 | 3,467 | -0.63% | 5,679 | 1 | Borough |
| Ohioville | 15 | 3,291 | 3,345 | -0.27% | 141 | 23 | Borough |
| Patterson | 16 | 3,040 | 3,119 | -0.2% | 1,838 | 2 | Township |
| Daugherty | 17 | 2,990 | 3,074 | -0.27% | 302 | 10 | Township |
| Freedom | 18 | 2,945 | 2,997 | -0.1% | 170 | 17 | Township |
| Clinton | 19 | 2,811 | 2,911 | -0.81% | 119 | 24 | Township |
| Raccoon | 20 | 2,703 | 2,780 | -0.44% | 144 | 19 | Township |
| Rochester | 21 | 2,693 | 2,777 | -0.33% | 693 | 4 | Township |
| South Beaver | 22 | 2,646 | 2,672 | 0.19% | 89 | 30 | Township |
| Midland | 23 | 2,335 | 2,427 | -0.64% | 1,291 | 2 | Borough |
| Greene | 24 | 2,331 | 2,186 | 1.61% | 93 | 25 | Township |
| Independence | 25 | 2,197 | 2,245 | -0.27% | 95 | 23 | Township |
| Conway | 26 | 2,111 | 2,168 | -0.42% | 1,654 | 1 | Borough |
| Clinton | 27 | 2,067 | 2,038 | 0.1% | 54 | 38 | Township |
| Big Beaver | 28 | 1,813 | 1,869 | -0.49% | 102 | 18 | Borough |
| Beaver | 29 | 1,775 | 1,827 | -0.39% | 53 | 33 | Township |
| Darlington | 30 | 1,763 | 1,804 | 0% | 80 | 22 | Township |
| Industry | 31 | 1,763 | 1,829 | -0.62% | 174 | 10 | Borough |
| Freedom | 32 | 1,440 | 1,491 | -0.55% | 2,384 | 1 | Borough |
| New Beaver | 33 | 1,328 | 1,369 | -0.52% | 92 | 14 | Borough |
| Clinton | 34 | 1,280 | 1,325 | -0.62% | 104 | 12 | Township |
| Vanport | 35 | 1,252 | 1,287 | -0.4% | 1,368 | 1 | Township |
| West Mayfield | 36 | 1,150 | 1,195 | -0.61% | 1,447 | 1 | Borough |
| Ellport | 37 | 1,090 | 1,081 | 0.18% | 2,541 | 0 | Borough |
| Clinton | 38 | 944 | 949 | 0.32% | 33 | 28 | Township |
| Beaver | 39 | 910 | 879 | 0.78% | 26 | 35 | Township |
| Freedom | 40 | 857 | 822 | 0.71% | 61 | 14 | Township |
| Beaver | 41 | 791 | 792 | 0.13% | 22 | 37 | Township |
| Bridgewater | 42 | 729 | 743 | -0.27% | 1,170 | 1 | Borough |
| Koppel | 43 | 687 | 708 | -0.43% | 1,279 | 1 | Borough |
| Patterson Heights | 44 | 612 | 636 | -0.65% | 2,720 | 0 | Borough |
| East Rochester | 45 | 540 | 563 | -0.74% | 1,475 | 0 | Borough |
| Potter | 46 | 524 | 521 | 0.19% | 83 | 6 | Township |
| Beaver | 47 | 505 | 514 | -0.39% | 27 | 18 | Township |
| Beaver | 48 | 451 | 467 | -0.66% | 21 | 21 | Township |
| South Heights | 49 | 368 | 385 | -0.81% | 1,125 | 0 | Borough |
| New Galilee | 50 | 317 | 328 | -0.63% | 1,144 | 0 | Borough |
| Fallston | 51 | 246 | 255 | -0.4% | 519 | 0 | Borough |
| Darlington | 52 | 244 | 249 | -0.41% | 2,976 | 0 | Borough |
| Georgetown | 53 | 201 | 207 | -0.5% | 1,149 | 0 | Borough |
| Eastvale | 54 | 172 | 180 | -0.58% | 1,911 | 0 | Borough |
| Shippingport | 55 | 149 | 158 | -0.67% | 43 | 3 | Borough |
| Hookstown | 56 | 125 | 130 | -0.79% | 926 | 0 | Borough |
| Frankfort Springs | 57 | 110 | 115 | -0.9% | 423 | 0 | Borough |
| Homewood | 58 | 88 | 91 | 0% | 521 | 0 | Borough |
| S.N.P.J. | 59 | 15 | 15 | 0% | 20 | 1 | Borough |
Center is the largest city in Beaver County, with a population of 11,873.
S.N.P.J. is the smallest city in Beaver County, with a population of 15.
There are 59 cities in Beaver County, Pennsylvania.