13 cities
| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Olive | 1 | 5,827 | 5,719 | -0.36% | 212 | 28 | Township |
| Noble | 2 | 1,961 | 1,983 | -0.66% | 66 | 30 | Township |
| Caldwell | 3 | 1,955 | 1,678 | 2.41% | 2,199 | 1 | Village |
| Center | 4 | 1,063 | 1,078 | -0.56% | 38 | 28 | Township |
| Enoch | 5 | 422 | 427 | -0.71% | 16 | 26 | Township |
| Seneca | 6 | 409 | 411 | -0.49% | 17 | 24 | Township |
| Sharon | 7 | 337 | 343 | -0.88% | 12 | 27 | Township |
| Stock | 8 | 335 | 334 | -0.59% | 14 | 25 | Township |
| Elk | 9 | 281 | 276 | -0.35% | 10 | 29 | Township |
| Summerfield | 10 | 242 | 242 | 0% | 652 | 0 | Village |
| Belle Valley | 11 | 198 | 200 | 0% | 486 | 0 | Village |
| Sarahsville | 12 | 150 | 150 | 0% | 888 | 0 | Village |
| Dexter City | 13 | 82 | 84 | 0% | 491 | 0 | Village |
Olive is the largest city in Noble County, with a population of 5,827.
Dexter City is the smallest city in Noble County, with a population of 82.
There are 13 cities in Noble County, Ohio.