31 cities
| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Norwich | 1 | 41,937 | 37,916 | 2.95% | 3,070 | 14 | Township |
| Zanesville | 2 | 24,986 | 24,776 | 0.14% | 2,113 | 12 | City |
| Falls | 3 | 8,674 | 8,713 | -0.13% | 353 | 25 | Township |
| Newton | 4 | 5,210 | 5,224 | -0.08% | 113 | 46 | Township |
| Muskingum | 5 | 4,882 | 4,917 | -0.14% | 163 | 30 | Township |
| Union | 6 | 4,330 | 4,251 | 1.19% | 170 | 25 | Township |
| Washington | 7 | 4,175 | 4,186 | -0.1% | 153 | 27 | Township |
| Hopewell | 8 | 3,182 | 3,195 | -0.13% | 83 | 38 | Township |
| Hopewell | 9 | 2,779 | 2,675 | 0.87% | 82 | 34 | Township |
| Hopewell | 10 | 2,593 | 2,599 | 0.08% | 69 | 38 | Township |
| Licking | 11 | 2,337 | 2,355 | -0.17% | 93 | 25 | Township |
| New Concord | 12 | 2,330 | 2,359 | -0.21% | 1,289 | 2 | Village |
| South Zanesville | 13 | 1,900 | 1,897 | 0.05% | 2,363 | 1 | Village |
| Cass | 14 | 1,786 | 1,802 | -0.17% | 63 | 28 | Township |
| Roseville | 15 | 1,740 | 1,751 | -0.11% | 2,533 | 1 | Village |
| Dresden | 16 | 1,642 | 1,657 | -0.12% | 1,285 | 1 | Village |
| Hopewell | 17 | 1,446 | 1,386 | 0.7% | 57 | 25 | Township |
| Frazeysburg | 18 | 1,350 | 1,352 | 0% | 1,315 | 1 | Village |
| Brush Creek | 19 | 1,265 | 1,268 | -0.08% | 42 | 30 | Township |
| Salt Creek | 20 | 1,096 | 1,097 | -0.09% | 39 | 28 | Township |
| Hopewell | 21 | 1,022 | 995 | 0.69% | 33 | 31 | Township |
| Norwich | 22 | 1,017 | 1,033 | -0.39% | 39 | 26 | Township |
| Clay | 23 | 951 | 960 | -0.21% | 101 | 9 | Township |
| Philo | 24 | 723 | 722 | 0% | 1,412 | 1 | Village |
| Blue Rock | 25 | 666 | 659 | 0.3% | 25 | 27 | Township |
| Adams | 26 | 620 | 621 | 0% | 25 | 25 | Township |
| Rich Hill | 27 | 496 | 502 | -0.4% | 14 | 36 | Township |
| Meigs | 28 | 204 | 202 | 0% | 6 | 37 | Township |
| Adamsville | 29 | 139 | 139 | 0% | 2,574 | 0 | Village |
| Fultonham | 30 | 109 | 109 | 0% | 1,185 | 0 | Village |
| Norwich | 31 | 98 | 98 | 0% | 1,273 | 0 | Village |
Norwich is the largest city in Muskingum County, with a population of 41,937.
Norwich is the smallest city in Muskingum County, with a population of 98.
There are 31 cities in Muskingum County, Ohio.