6 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Jackson | 1 | 6,173 | 6,255 | -0.26% | 682 | 9.05 | City |
| Wellston | 2 | 5,483 | 5,417 | 0.24% | 787 | 6.97 | City |
| Oak Hill | 3 | 1,392 | 1,407 | -0.21% | 1,095 | 1.27 | Village |
| Massieville | 4 | 875 | 579 | 7.1% | 464 | 1.88 | CDP |
| Coalton | 5 | 439 | 444 | -0.23% | 791 | 0.56 | Village |
| Andersonville | 6 | 347 | 584 | -7.47% | 153 | 2.27 | CDP |
Jackson is the largest city in Jackson County, with a population of 6,173.
Andersonville is the smallest city in Jackson County.
There are 6 cities in Jackson County, Ohio.