37 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Norwich | 1 | 40,736 | 37,916 | 3.04% | 2,982 | 14 | Township |
| Zanesville | 2 | 24,951 | 24,776 | 0.14% | 2,120 | 12 | City |
| Falls | 3 | 8,685 | 8,713 | -0.13% | 353 | 25 | Township |
| Newton | 4 | 5,214 | 5,224 | -0.08% | 113 | 46 | Township |
| Muskingum | 5 | 4,889 | 4,917 | -0.14% | 163 | 30 | Township |
| Union | 6 | 4,279 | 4,251 | 1.21% | 168 | 25 | Township |
| Washington | 7 | 4,179 | 4,186 | -0.1% | 153 | 27 | Township |
| Hopewell | 8 | 3,186 | 3,195 | -0.13% | 83 | 38 | Township |
| Hopewell | 9 | 2,755 | 2,675 | 0.88% | 81 | 34 | Township |
| Hopewell | 10 | 2,591 | 2,599 | 0.08% | 69 | 38 | Township |
| North Zanesville | 11 | 2,587 | 2,187 | -0.58% | 729 | 4 | CDP |
| Licking | 12 | 2,341 | 2,355 | -0.17% | 93 | 25 | Township |
| New Concord | 13 | 2,335 | 2,359 | -0.21% | 1,291 | 2 | Village |
| South Zanesville | 14 | 1,899 | 1,897 | 0% | 2,362 | 1 | Village |
| Cass | 15 | 1,789 | 1,802 | -0.17% | 63 | 28 | Township |
| Duncan Falls | 16 | 1,751 | 1,549 | 3.43% | 1,412 | 1 | CDP |
| Roseville | 17 | 1,742 | 1,751 | -0.11% | 2,536 | 1 | Village |
| Dresden | 18 | 1,644 | 1,657 | -0.18% | 1,286 | 1 | Village |
| Hopewell | 19 | 1,436 | 1,386 | 0.7% | 57 | 25 | Township |
| Frazeysburg | 20 | 1,350 | 1,352 | -0.07% | 1,315 | 1 | Village |
| Brush Creek | 21 | 1,266 | 1,268 | -0.08% | 42 | 30 | Township |
| Pleasant Grove | 22 | 1,202 | 1,481 | -2.91% | 374 | 3 | CDP |
| Salt Creek | 23 | 1,097 | 1,097 | -0.09% | 39 | 28 | Township |
| Norwich | 24 | 1,021 | 1,033 | -0.39% | 39 | 26 | Township |
| Hopewell | 25 | 1,015 | 995 | 0.69% | 32 | 31 | Township |
| Clay | 26 | 953 | 960 | -0.21% | 101 | 9 | Township |
| Philo | 27 | 723 | 722 | 0% | 1,412 | 1 | Village |
| Blue Rock | 28 | 664 | 659 | 0.3% | 25 | 27 | Township |
| Adams | 29 | 620 | 621 | 0% | 25 | 25 | Township |
| Rich Hill | 30 | 498 | 502 | -0.4% | 14 | 36 | Township |
| Nashport | 31 | 394 | 332 | 7.07% | 158 | 2 | CDP |
| Meigs | 32 | 204 | 202 | 0% | 6 | 37 | Township |
| Trinway | 33 | 184 | 137 | -6.12% | 657 | 0 | CDP |
| Adamsville | 34 | 139 | 139 | 0% | 2,574 | 0 | Village |
| Fultonham | 35 | 109 | 109 | 0% | 1,185 | 0 | Village |
| Norwich | 36 | 98 | 98 | 0% | 1,273 | 0 | Village |
| East Fultonham | 37 | 95 | 362 | -14.41% | 237 | 0 | CDP |
Norwich is the largest city in Muskingum County, with a population of 40,736.
East Fultonham is the smallest city in Muskingum County, with a population of 95.
There are 37 cities in Muskingum County, Ohio.