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 |
|---|---|---|---|---|---|---|---|
| White township | 1 | 15,218 | 15,328 | -0.07% | 359 | 42.4 | Township |
| North Union township | 2 | 11,281 | 11,814 | -1.15% | 291 | 38.8 | Township |
| South Union township | 3 | 10,315 | 10,872 | -1.3% | 616 | 16.8 | Township |
| Uniontown | 4 | 9,448 | 9,964 | -1.35% | 4,609 | 2.0 | City |
| Smithfield township | 5 | 7,811 | 7,972 | -0.94% | 341 | 22.9 | Township |
| Connellsville | 6 | 6,593 | 7,019 | -1.6% | 3,022 | 2.2 | City |
| Bullskin township | 7 | 6,411 | 6,731 | -1.23% | 146 | 44.0 | Township |
| Dunbar township | 8 | 6,337 | 6,652 | -1.22% | 107 | 59.2 | Township |
| Georges township | 9 | 6,043 | 6,346 | -1.21% | 127 | 47.6 | Township |
| Redstone township | 10 | 4,839 | 5,067 | -1.16% | 212 | 22.8 | Township |
| Smithfield township | 11 | 4,646 | 4,619 | 7% | 844 | 5.5 | Township |
| German township | 12 | 4,429 | 4,659 | -1.25% | 132 | 33.5 | Township |
| Menallen township | 13 | 3,979 | 4,087 | -0.92% | 187 | 21.3 | Township |
| Wharton township | 14 | 3,361 | 3,352 | 1.08% | 37 | 91.8 | Township |
| Masontown | 15 | 3,121 | 3,271 | -1.2% | 2,088 | 1.5 | Borough |
| Saltlick township | 16 | 2,906 | 3,038 | -1.09% | 77 | 37.5 | Township |
| Springhill township | 17 | 2,610 | 2,725 | -1.06% | 77 | 33.8 | Township |
| Perry township | 18 | 2,227 | 2,336 | -1.2% | 110 | 20.3 | Township |
| Brownsville | 19 | 2,076 | 2,179 | -1.24% | 2,125 | 1.0 | Borough |
| Oliver township | 20 | 2,053 | 2,044 | -0.05% | 249 | 8.2 | Township |
| Oliver township | 21 | 2,036 | 2,059 | -0.15% | 58 | 35.0 | Township |
| Connellsville township | 22 | 1,976 | 2,071 | -1.2% | 174 | 11.3 | Township |
| South Connellsville | 23 | 1,828 | 1,916 | -1.19% | 1,087 | 1.7 | Borough |
| North Belle Vernon | 24 | 1,819 | 1,871 | -0.71% | 4,331 | 0.4 | Borough |
| Fairchance | 25 | 1,794 | 1,878 | -1.16% | 1,511 | 1.2 | Borough |
| Farmington township | 26 | 1,723 | 1,776 | -0.92% | 28 | 62.3 | Township |
| Upper Tyrone township | 27 | 1,680 | 1,763 | -1.18% | 215 | 7.8 | Township |
| Henry Clay township | 28 | 1,676 | 1,762 | -0.95% | 33 | 51.2 | Township |
| Perryopolis | 29 | 1,598 | 1,701 | -1.6% | 1,091 | 1.5 | Borough |
| Smithfield township | 30 | 1,473 | 1,456 | 0.61% | 35 | 41.9 | Township |
| White township | 31 | 1,281 | 1,314 | -0.31% | 1,848 | 0.7 | Township |
| Farmington township | 32 | 1,253 | 1,281 | -0.4% | 37 | 34.2 | Township |
| Point Marion | 33 | 1,098 | 1,150 | -1.17% | 2,711 | 0.4 | Borough |
| Speers | 34 | 1,065 | 1,084 | -0.47% | 1,120 | 1.0 | Borough |
| Lower Tyrone township | 35 | 1,022 | 1,067 | -1.06% | 64 | 15.9 | Township |
| Belle Vernon | 36 | 979 | 1,027 | -1.21% | 3,751 | 0.3 | Borough |
| West Brownsville | 37 | 969 | 976 | -0.21% | 746 | 1.3 | Borough |
| Dunbar | 38 | 964 | 1,012 | -1.23% | 1,668 | 0.6 | Borough |
| New Salem | 39 | 823 | 818 | 0.12% | 1,740 | 0.5 | Borough |
| Smithfield | 40 | 795 | 835 | -1.24% | 1,110 | 0.7 | Borough |
| Everson | 41 | 731 | 767 | -1.22% | 3,384 | 0.2 | Borough |
| Newell | 42 | 486 | 512 | -1.42% | 827 | 0.6 | Borough |
| Fayette City | 43 | 479 | 502 | -1.24% | 2,158 | 0.2 | Borough |
| Vanderbilt | 44 | 392 | 412 | -1.26% | 2,119 | 0.2 | Borough |
| Dawson | 45 | 335 | 351 | -1.18% | 1,936 | 0.2 | Borough |
| Markleysburg | 46 | 233 | 241 | -0.85% | 785 | 0.3 | Borough |
| New Centerville | 47 | 122 | 126 | -0.81% | 859 | 0.1 | Borough |
| Casselman | 48 | 117 | 104 | 2.63% | 582 | 0.2 | Borough |
| Ohiopyle | 49 | 36 | 39 | -2.7% | 86 | 0.4 | Borough |
| Seven Springs | 50 | 25 | 25 | 0% | 23 | 1.1 | 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.
White township is the largest city in Fayette County.
Seven Springs is the smallest city in Fayette County.
There are 50 cities in Fayette County, Pennsylvania.