9 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Enterprise | 1 | 2,091 | 2,045 | 0.38% | 1,425 | 1 | City |
| Enterprise | 2 | 2,091 | 2,049 | 0.38% | 1,425 | 1 | City |
| Joseph | 3 | 1,179 | 1,154 | 0.34% | 1,300 | 1 | City |
| Joseph | 4 | 1,179 | 1,156 | 0.34% | 1,300 | 1 | City |
| Wallowa | 5 | 818 | 800 | 0.37% | 1,339 | 1 | City |
| Wallowa | 6 | 818 | 802 | 0.37% | 1,339 | 1 | City |
| Lostine | 7 | 247 | 239 | 0.41% | 858 | 0 | City |
| Lostine | 8 | 247 | 239 | 0.41% | 858 | 0 | City |
| Wallowa Lake | 9 | 120 | 52 | 7.14% | 65 | 2 | CDP |
Enterprise is the largest city in Wallowa County, with a population of 2,091.
Wallowa Lake is the smallest city in Wallowa County, with a population of 120.
There are 9 cities in Wallowa County, Oregon.