14 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Republic | 1 | 1,029 | 981 | 0.88% | 725 | 1 | City |
| Republic | 2 | 1,029 | 982 | 0.88% | 725 | 1 | City |
| Curlew Lake | 3 | 616 | 579 | 1.65% | 142 | 4 | CDP |
| Inchelium | 4 | 320 | 325 | -1.84% | 12 | 26 | CDP |
| Torboy | 5 | 284 | 154 | 7.17% | 306 | 1 | CDP |
| Keller | 6 | 261 | 204 | 0.38% | 27 | 10 | CDP |
| Curlew | 7 | 106 | 51 | 0% | 140 | 1 | CDP |
| Danville | 8 | 102 | 70 | 6.25% | 580 | 0 | CDP |
| Twin Lakes | 9 | 93 | 71 | 8.14% | 22 | 4 | CDP |
| Barstow | 10 | 68 | 49 | 7.94% | 121 | 1 | CDP |
| Boyds | 11 | 43 | 52 | 7.5% | 221 | 0 | CDP |
| Malo | 12 | 34 | 45 | 6.25% | 288 | 0 | CDP |
| Orient | 13 | 30 | 82 | -16.67% | 69 | 0 | CDP |
| Pine Grove | 14 | 30 | 84 | -21.05% | 61 | 0 | CDP |
Republic is the largest city in Ferry County, with a population of 1,029.
Pine Grove is the smallest city in Ferry County, with a population of 30.
There are 14 cities in Ferry County, Washington.