13 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Bluffton | 1 | 10,617 | 10,311 | 0.58% | 1,245 | 9 | City |
| Harrison | 2 | 9,037 | 8,811 | 0.52% | 189 | 48 | Township |
| Lancaster | 3 | 6,256 | 6,055 | 0.61% | 131 | 48 | Township |
| Jefferson | 4 | 6,019 | 5,840 | 0.62% | 128 | 47 | Township |
| Ossian | 5 | 3,458 | 3,356 | 0.58% | 1,931 | 2 | Town |
| Union | 6 | 2,132 | 2,080 | 0.47% | 61 | 35 | Township |
| Rockcreek | 7 | 1,619 | 1,585 | 0.43% | 46 | 36 | Township |
| Markle | 8 | 1,092 | 1,075 | 0.28% | 753 | 1 | Town |
| Nottingham | 9 | 1,042 | 1,018 | 0.58% | 22 | 48 | Township |
| Chester | 10 | 970 | 943 | 0.62% | 27 | 36 | Township |
| Jackson | 11 | 775 | 759 | 0.39% | 22 | 36 | Township |
| Uniondale | 12 | 277 | 272 | 0.36% | 1,319 | 0 | Town |
| Poneto | 13 | 177 | 172 | 0.57% | 1,539 | 0 | Town |
Bluffton is the largest city in Wells County, with a population of 10,617.
Poneto is the smallest city in Wells County, with a population of 177.
There are 13 cities in Wells County, Indiana.