10 cities
| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Zanesville | 1 | 24,986 | 24,776 | 0.14% | 2,113 | 12 | City |
| New Concord | 2 | 2,330 | 2,359 | -0.21% | 1,289 | 2 | Village |
| South Zanesville | 3 | 1,900 | 1,897 | 0.05% | 2,363 | 1 | Village |
| Roseville | 4 | 1,740 | 1,751 | -0.11% | 2,533 | 1 | Village |
| Dresden | 5 | 1,642 | 1,657 | -0.12% | 1,285 | 1 | Village |
| Frazeysburg | 6 | 1,350 | 1,352 | 0% | 1,315 | 1 | Village |
| Philo | 7 | 723 | 722 | 0% | 1,412 | 1 | Village |
| Adamsville | 8 | 139 | 139 | 0% | 2,574 | 0 | Village |
| Fultonham | 9 | 109 | 109 | 0% | 1,185 | 0 | Village |
| Norwich | 10 | 98 | 98 | 0% | 1,273 | 0 | Village |
Zanesville is the largest city in Muskingum County, with a population of 24,986.
Norwich is the smallest city in Muskingum County, with a population of 98.
There are 10 cities in Muskingum County, Ohio.