18 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Brown | 1 | 7,180 | 7,310 | -1.06% | 171 | 42 | Township |
| Center | 2 | 4,347 | 4,423 | -1.11% | 293 | 15 | Township |
| Carrollton | 3 | 3,054 | 3,083 | -0.2% | 1,110 | 3 | Village |
| Augusta | 4 | 1,456 | 1,491 | -1.22% | 52 | 28 | Township |
| Rose | 5 | 1,438 | 1,466 | -1.1% | 41 | 35 | Township |
| Lake Mohawk | 6 | 1,430 | 1,643 | -0.97% | 390 | 4 | CDP |
| Orange | 7 | 1,128 | 1,149 | -1.05% | 43 | 26 | Township |
| Malvern | 8 | 1,094 | 1,104 | -0.18% | 1,503 | 1 | Village |
| Washington | 9 | 1,070 | 1,095 | -1.02% | 41 | 26 | Township |
| Lee | 10 | 1,006 | 1,035 | -1.28% | 32 | 32 | Township |
| Fox | 11 | 952 | 968 | -1.04% | 26 | 36 | Township |
| Loudon | 12 | 906 | 925 | -0.98% | 36 | 25 | Township |
| Union | 13 | 871 | 891 | -1.02% | 39 | 23 | Township |
| East | 14 | 791 | 812 | -1.37% | 34 | 23 | Township |
| Pekin | 15 | 440 | 295 | 7.06% | 880 | 1 | CDP |
| Dellroy | 16 | 264 | 269 | -0.38% | 1,467 | 0 | Village |
| Sherrodsville | 17 | 217 | 220 | -0.46% | 687 | 0 | Village |
| Leesville | 18 | 125 | 127 | -0.79% | 486 | 0 | Village |
Brown is the largest city in Carroll County, with a population of 7,180.
Leesville is the smallest city in Carroll County, with a population of 125.
There are 18 cities in Carroll County, Ohio.