5 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Lewiston | 1 | 35,230 | 34,245 | 0.56% | 2,017 | 17.47 | City |
| Lapwai | 2 | 1,229 | 1,169 | 0.99% | 1,626 | 0.76 | City |
| Culdesac | 3 | 426 | 416 | 0.47% | 1,910 | 0.22 | City |
| Sweetwater | 4 | 179 | 264 | 1.13% | 150 | 1.19 | CDP |
| Peck | 5 | 175 | 165 | 1.16% | 692 | 0.25 | City |
Lewiston is the largest city in Nez Perce County, with a population of 35,230.
Peck is the smallest city in Nez Perce County.
There are 5 cities in Nez Perce County, Idaho.