22 cities
| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Ashland | 1 | 18,541 | 19,227 | -0.61% | 1,643 | 11 | City |
| Montgomery | 2 | 2,776 | 2,750 | 0.4% | 101 | 27 | Township |
| Loudonville | 3 | 2,775 | 2,783 | -0.04% | 1,019 | 3 | Village |
| Sullivan | 4 | 2,741 | 2,630 | 0.66% | 108 | 25 | Township |
| Vermillion | 5 | 2,702 | 2,591 | 0.9% | 73 | 37 | Township |
| Orange | 6 | 2,600 | 2,531 | 0.58% | 69 | 38 | Township |
| Hanover | 7 | 2,435 | 2,428 | 0.21% | 75 | 32 | Township |
| Milton | 8 | 2,424 | 2,363 | 0.58% | 107 | 23 | Township |
| Clear Creek | 9 | 2,289 | 2,225 | 0.57% | 91 | 25 | Township |
| Mohican | 10 | 2,095 | 2,093 | 0.24% | 70 | 30 | Township |
| Polk | 11 | 1,953 | 1,973 | 0.1% | 140 | 14 | Township |
| Mifflin | 12 | 1,267 | 1,220 | 1.12% | 102 | 12 | Township |
| Ruggles | 13 | 986 | 954 | 0.61% | 38 | 26 | Township |
| Lake | 14 | 750 | 708 | 1.08% | 37 | 20 | Township |
| Perrysville | 15 | 730 | 732 | 0% | 918 | 1 | Village |
| Jeromesville | 16 | 526 | 531 | -0.19% | 1,525 | 0 | Village |
| Hayesville | 17 | 456 | 461 | -0.22% | 618 | 1 | Village |
| Bailey Lakes | 18 | 346 | 349 | 0% | 908 | 0 | Village |
| Savannah | 19 | 325 | 325 | 0% | 580 | 1 | Village |
| Polk | 20 | 304 | 309 | -0.33% | 300 | 1 | Village |
| Mifflin | 21 | 153 | 156 | 0% | 836 | 0 | Village |
| Congress | 22 | 131 | 134 | 0% | 819 | 0 | Village |
Ashland is the largest city in Ashland County, with a population of 18,541.
Congress is the smallest city in Ashland County, with a population of 131.
There are 22 cities in Ashland County, Ohio.