10 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Anamosa | 1 | 5,944 | 5,448 | 1.69% | 2,355 | 3 | City |
| Monticello | 2 | 4,106 | 4,048 | 0.27% | 730 | 6 | City |
| Olin | 3 | 651 | 655 | -0.15% | 637 | 1 | City |
| Wyoming | 4 | 525 | 527 | -0.19% | 1,082 | 0 | City |
| Oxford Junction | 5 | 423 | 427 | -0.24% | 653 | 1 | City |
| Martelle | 6 | 249 | 251 | -0.4% | 801 | 0 | City |
| Onslow | 7 | 197 | 199 | -0.51% | 1,015 | 0 | City |
| Center Junction | 8 | 169 | 102 | 6.96% | 230 | 1 | CDP |
| Morley | 9 | 94 | 94 | 0% | 1,093 | 0 | City |
| Stone City | 10 | 84 | 60 | -8.7% | 48 | 2 | CDP |
Anamosa is the largest city in Jones County, with a population of 5,944.
Stone City is the smallest city in Jones County, with a population of 84.
There are 10 cities in Jones County, Iowa.