13 cities
| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Bluffton | 1 | 10,678 | 10,311 | 0.57% | 1,252 | 9 | City |
| Harrison | 2 | 9,084 | 8,811 | 0.52% | 190 | 48 | Township |
| Lancaster | 3 | 6,294 | 6,055 | 0.61% | 132 | 48 | Township |
| Jefferson | 4 | 6,056 | 5,840 | 0.61% | 129 | 47 | Township |
| Ossian | 5 | 3,479 | 3,356 | 0.61% | 1,942 | 2 | Town |
| Union | 6 | 2,142 | 2,080 | 0.47% | 61 | 35 | Township |
| Rockcreek | 7 | 1,626 | 1,585 | 0.43% | 46 | 36 | Township |
| Markle | 8 | 1,096 | 1,075 | 0.37% | 755 | 1 | Town |
| Nottingham | 9 | 1,048 | 1,018 | 0.58% | 22 | 48 | Township |
| Chester | 10 | 976 | 943 | 0.62% | 27 | 36 | Township |
| Jackson | 11 | 778 | 759 | 0.39% | 22 | 36 | Township |
| Uniondale | 12 | 278 | 272 | 0.36% | 1,324 | 0 | Town |
| Poneto | 13 | 178 | 172 | 0.56% | 1,548 | 0 | Town |
Bluffton is the largest city in Wells County, with a population of 10,678.
Poneto is the smallest city in Wells County, with a population of 178.
There are 13 cities in Wells County, Indiana.