18 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Brown township | 1 | 7,393 | 7,315 | 0.35% | 176 | 42.01 | Township |
| Center township | 2 | 4,459 | 4,423 | 0.22% | 301 | 14.82 | Township |
| Carrollton | 3 | 3,101 | 3,086 | 0.1% | 1,127 | 2.75 | Village |
| Augusta township | 4 | 1,492 | 1,490 | 0.13% | 54 | 27.84 | Township |
| Rose township | 5 | 1,481 | 1,465 | 0.34% | 42 | 35.49 | Township |
| Lake Mohawk | 6 | 1,430 | 1,643 | -0.97% | 390 | 3.67 | CDP |
| Orange township | 7 | 1,163 | 1,151 | 0.35% | 44 | 26.20 | Township |
| Malvern | 8 | 1,104 | 1,108 | -0.09% | 1,516 | 0.73 | Village |
| Washington township | 9 | 1,103 | 1,098 | 0.27% | 42 | 26 | Township |
| Lee township | 10 | 1,033 | 1,034 | 0.1% | 33 | 31.63 | Township |
| Fox township | 11 | 978 | 968 | 0.31% | 27 | 36.15 | Township |
| Loudon township | 12 | 928 | 923 | 0.22% | 37 | 25.29 | Township |
| Union township | 13 | 892 | 888 | 0.22% | 40 | 22.50 | Township |
| East township | 14 | 829 | 813 | 0.61% | 36 | 23.04 | Township |
| Pekin | 15 | 440 | 295 | 7.06% | 880 | 0.50 | CDP |
| Dellroy | 16 | 263 | 267 | -0.38% | 1,461 | 0.18 | Village |
| Sherrodsville | 17 | 221 | 221 | 0% | 699 | 0.32 | Village |
| Leesville | 18 | 127 | 127 | 0% | 494 | 0.26 | Village |
Brown township is the largest city in Carroll County, with a population of 7,393.
Leesville is the smallest city in Carroll County.
There are 18 cities in Carroll County, Ohio.