13 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Bluffton | 1 | 10,569 | 10,313 | 0.48% | 1,239 | 8.53 | City |
| Harrison township | 2 | 9,070 | 8,812 | 0.83% | 190 | 47.83 | Township |
| Lancaster township | 3 | 6,289 | 6,054 | 1.01% | 132 | 47.59 | Township |
| Jefferson township | 4 | 6,039 | 5,840 | 0.94% | 129 | 46.98 | Township |
| Ossian | 5 | 3,413 | 3,335 | 0.47% | 1,906 | 1.79 | Town |
| Union township | 6 | 2,142 | 2,078 | 0.89% | 61 | 35.01 | Township |
| Rockcreek township | 7 | 1,627 | 1,584 | 0.74% | 46 | 35.57 | Township |
| Markle | 8 | 1,084 | 1,071 | 0.28% | 747 | 1.45 | Town |
| Nottingham township | 9 | 1,047 | 1,019 | 0.77% | 22 | 48.05 | Township |
| Chester township | 10 | 970 | 944 | 0.73% | 27 | 35.62 | Township |
| Jackson township | 11 | 774 | 756 | 0.65% | 22 | 35.66 | Township |
| Uniondale | 12 | 278 | 272 | 0.36% | 1,324 | 0.21 | Town |
| Poneto | 13 | 176 | 173 | 0.57% | 1,530 | 0.12 | Town |
Bluffton is the largest city in Wells County, with a population of 10,569.
Poneto is the smallest city in Wells County.
There are 13 cities in Wells County, Indiana.