9 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Colville | 1 | 5,105 | 4,935 | 0.67% | 1,653 | 3.09 | City |
| Chewelah | 2 | 2,781 | 2,476 | 2.24% | 942 | 2.95 | City |
| Kettle Falls | 3 | 1,670 | 1,635 | 0.42% | 1,506 | 1.11 | City |
| Loon Lake | 4 | 682 | 689 | -0.87% | 209 | 3.26 | CDP |
| Northport | 5 | 294 | 289 | 0.34% | 519 | 0.57 | Town |
| Springdale | 6 | 294 | 239 | 3.89% | 260 | 1.13 | Town |
| Marcus | 7 | 220 | 215 | 0.46% | 1,005 | 0.22 | Town |
| Valley | 8 | 78 | 122 | -6.02% | 182 | 0.43 | CDP |
| Clayton | 9 | 48 | 361 | -35.13% | 37 | 1.29 | CDP |
Colville is the largest city in Stevens County, with a population of 5,105.
Clayton is the smallest city in Stevens County.
There are 9 cities in Stevens County, Washington.