| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density (/mi²) | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Caldwell | 1 | 1,914 | 1,675 | 2.57% | 2,153 | 1 | Village |
| Summerfield | 2 | 240 | 241 | 0% | 647 | 0 | Village |
| Belle Valley | 3 | 198 | 201 | -0.5% | 486 | 0 | Village |
| Sarahsville | 4 | 145 | 146 | -0.68% | 858 | 0 | Village |
| Dexter City | 5 | 80 | 82 | -1.23% | 479 | 0 | Village |
Caldwell is the largest city in Noble County, with a population of 1,914.
Dexter City is the smallest city in Noble County, with a population of 80.
There are 5 cities in Noble County, Ohio.