5 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Lewiston | 1 | 34,803 | 34,250 | 0.32% | 1,992 | 17 | City |
| Lapwai | 2 | 1,258 | 1,213 | 0.72% | 1,664 | 1 | City |
| Culdesac | 3 | 417 | 414 | 0% | 1,870 | 0 | City |
| Sweetwater | 4 | 179 | 264 | 1.13% | 150 | 1 | CDP |
| Peck | 5 | 173 | 165 | 0.58% | 684 | 0 | City |
Lewiston is the largest city in Nez Perce County, with a population of 34,803.
Peck is the smallest city in Nez Perce County, with a population of 173.
There are 5 cities in Nez Perce County, Idaho.