8 cities
| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Mahoning | 1 | 4,553 | 4,553 | 0.35% | 533 | 9 | Township |
| Danville | 2 | 4,170 | 4,239 | -0.26% | 2,682 | 2 | Borough |
| Valley | 3 | 2,153 | 2,158 | 0.19% | 133 | 16 | Township |
| Anthony | 4 | 1,506 | 1,451 | 0.67% | 58 | 26 | Township |
| Cooper | 5 | 950 | 942 | 0.64% | 138 | 7 | Township |
| West Hemlock | 6 | 469 | 454 | 1.52% | 61 | 8 | Township |
| Mayberry | 7 | 243 | 232 | 0.83% | 35 | 7 | Township |
| Washingtonville | 8 | 211 | 202 | 0.96% | 3,907 | 0 | Borough |
Mahoning is the largest city in Montour County, with a population of 4,553.
Washingtonville is the smallest city in Montour County, with a population of 211.
There are 8 cities in Montour County, Pennsylvania.