6 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Devola | 1 | 2,673 | 2,593 | 0.04% | 521 | 5.13 | CDP |
| Caldwell | 2 | 1,997 | 1,677 | 3.31% | 2,246 | 0.89 | Village |
| Summerfield | 3 | 243 | 243 | 0% | 655 | 0.37 | Village |
| Belle Valley | 4 | 197 | 201 | -0.51% | 484 | 0.41 | Village |
| Sarahsville | 5 | 151 | 150 | 0% | 893 | 0.17 | Village |
| Dexter City | 6 | 78 | 80 | 0% | 467 | 0.17 | Village |
Devola is the largest city in Noble County, with a population of 2,673.
Dexter City is the smallest city in Noble County.
There are 6 cities in Noble County, Ohio.