| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density (/mi²) | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Enterprise | 1 | 2,116 | 2,053 | 0.62% | 1,442 | 1 | City |
| Joseph | 2 | 1,195 | 1,158 | 0.59% | 1,318 | 1 | City |
| Wallowa | 3 | 824 | 797 | 0.61% | 1,349 | 1 | City |
| Lostine | 4 | 249 | 239 | 0.81% | 865 | 0 | City |
Enterprise is the largest city in Wallowa County, with a population of 2,116.
Lostine is the smallest city in Wallowa County, with a population of 249.
There are 4 cities in Wallowa County, Oregon.