26 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Ashland | 1 | 18,379 | 19,226 | -0.91% | 1,629 | 11.28 | City |
| Montgomery township | 2 | 2,773 | 2,750 | 0.54% | 101 | 27.39 | Township |
| Loudonville | 3 | 2,768 | 2,785 | -0.11% | 1,017 | 2.72 | Village |
| Sullivan township | 4 | 2,763 | 2,631 | 1.36% | 109 | 25.41 | Township |
| Vermillion township | 5 | 2,684 | 2,589 | 1.05% | 72 | 37.14 | Township |
| Orange township | 6 | 2,633 | 2,529 | 1.35% | 70 | 37.80 | Township |
| Hanover township | 7 | 2,440 | 2,428 | 0.45% | 75 | 32.49 | Township |
| Milton township | 8 | 2,422 | 2,362 | 0.87% | 107 | 22.62 | Township |
| Clear Creek township | 9 | 2,290 | 2,225 | 0.88% | 91 | 25.18 | Township |
| Mohican township | 10 | 2,094 | 2,094 | 0.38% | 70 | 30.03 | Township |
| Polk township | 11 | 1,936 | 1,964 | -0.05% | 138 | 14 | Township |
| Mifflin township | 12 | 1,250 | 1,223 | 0.89% | 101 | 12.39 | Township |
| Sullivan | 13 | 1,158 | 774 | 7.22% | 280 | 4.14 | CDP |
| Ruggles township | 14 | 986 | 956 | 0.82% | 38 | 25.81 | Township |
| Cinnamon Lake | 15 | 973 | 1,228 | -1.82% | 601 | 1.62 | CDP |
| Nankin | 16 | 853 | 750 | 7.16% | 577 | 1.48 | CDP |
| Lake township | 17 | 749 | 709 | 1.49% | 37 | 20.12 | Township |
| Perrysville | 18 | 726 | 730 | -0.14% | 913 | 0.80 | Village |
| Jeromesville | 19 | 522 | 531 | -0.38% | 1,513 | 0.34 | Village |
| Hayesville | 20 | 440 | 447 | -0.23% | 596 | 0.74 | Village |
| Bailey Lakes | 21 | 343 | 350 | -0.29% | 900 | 0.38 | Village |
| Savannah | 22 | 321 | 325 | -0.31% | 573 | 0.56 | Village |
| Polk | 23 | 305 | 309 | -0.33% | 301 | 1.01 | Village |
| New Pittsburg | 24 | 264 | 363 | -2.94% | 194 | 1.36 | CDP |
| Mifflin | 25 | 154 | 159 | -0.65% | 842 | 0.18 | Village |
| Congress | 26 | 130 | 134 | -0.76% | 813 | 0.16 | Village |
Ashland is the largest city in Ashland County, with a population of 18,379.
Congress is the smallest city in Ashland County.
There are 26 cities in Ashland County, Ohio.