5 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Cherry township | 1 | 1,486 | 1,477 | 0.07% | 26 | 57.96 | Township |
| Dushore | 2 | 450 | 452 | 0% | 571 | 0.79 | Borough |
| Laporte | 3 | 315 | 317 | 0% | 295 | 1.07 | Borough |
| Eagles Mere | 4 | 152 | 151 | 0% | 74 | 2.06 | Borough |
| Forksville | 5 | 108 | 110 | 0% | 69 | 1.57 | Borough |
Cherry township is the largest city in Sullivan County, with a population of 1,486.
Forksville is the smallest city in Sullivan County.
There are 5 cities in Sullivan County, Pennsylvania.