8 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Mahoning | 1 | 4,537 | 4,553 | 0.35% | 531 | 9 | Township |
| Danville | 2 | 4,181 | 4,239 | -0.29% | 2,689 | 2 | Borough |
| Valley | 3 | 2,149 | 2,158 | 0.19% | 133 | 16 | Township |
| Anthony | 4 | 1,496 | 1,451 | 0.67% | 58 | 26 | Township |
| Cooper | 5 | 944 | 942 | 0.64% | 137 | 7 | Township |
| West Hemlock | 6 | 462 | 454 | 1.54% | 60 | 8 | Township |
| Mayberry | 7 | 241 | 232 | 0.84% | 34 | 7 | Township |
| Washingtonville | 8 | 209 | 202 | 0.48% | 3,870 | 0 | Borough |
Mahoning is the largest city in Montour County, with a population of 4,537.
Washingtonville is the smallest city in Montour County, with a population of 209.
There are 8 cities in Montour County, Pennsylvania.