5 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Homedale | 1 | 3,300 | 2,910 | 2.42% | 2,337 | 1.41 | City |
| Marsing | 2 | 1,273 | 1,230 | 0.71% | 1,869 | 0.68 | City |
| Grand View | 3 | 478 | 445 | 1.49% | 831 | 0.57 | City |
| Murphy | 4 | 215 | 190 | 6.97% | 54 | 4 | CDP |
| Bruneau | 5 | 51 | 60 | 6.25% | 32 | 1.61 | CDP |
Homedale is the largest city in Owyhee County, with a population of 3,300.
Bruneau is the smallest city in Owyhee County, with a population of 51.
There are 5 cities in Owyhee County, Idaho.