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 |
|---|---|---|---|---|---|---|---|
| Bradford | 1 | 7,469 | 7,833 | -1.2% | 2,246 | 3.3 | City |
| Bradford township | 2 | 4,623 | 4,794 | -0.84% | 83 | 55.6 | Township |
| Foster township | 3 | 3,867 | 4,036 | -0.95% | 84 | 46.2 | Township |
| Kane | 4 | 3,456 | 3,626 | -1.23% | 2,208 | 1.6 | Borough |
| Bradford township | 5 | 2,806 | 2,832 | -0.43% | 73 | 38.3 | Township |
| Keating township | 6 | 2,645 | 2,723 | -0.71% | 27 | 98.2 | Township |
| Eldred township | 7 | 2,568 | 2,600 | -0.81% | 105 | 24.5 | Township |
| Lafayette township | 8 | 2,083 | 1,761 | 1.46% | 29 | 71.1 | Township |
| Port Allegany | 9 | 2,034 | 2,134 | -1.21% | 1,147 | 1.8 | Borough |
| Eldred township | 10 | 1,955 | 1,993 | -0.31% | 137 | 14.2 | Township |
| Wetmore township | 11 | 1,586 | 1,619 | -0.69% | 20 | 79.1 | Township |
| Otto township | 12 | 1,463 | 1,519 | -0.61% | 42 | 34.9 | Township |
| Smethport | 13 | 1,369 | 1,435 | -1.23% | 814 | 1.7 | Borough |
| Eldred township | 14 | 1,344 | 1,393 | -0.74% | 35 | 38.6 | Township |
| Eldred township | 15 | 1,248 | 1,275 | -0.24% | 27 | 46.5 | Township |
| Mount Jewett | 16 | 813 | 851 | -1.21% | 338 | 2.4 | Borough |
| Eldred | 17 | 726 | 766 | -1.36% | 830 | 0.9 | Borough |
| Lewis Run | 18 | 552 | 579 | -1.25% | 302 | 1.8 | 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.
Bradford is the largest city in McKean County.
Lewis Run is the smallest city in McKean County.
There are 18 cities in McKean County, Pennsylvania.