5 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Homedale | 1 | 3,205 | 2,912 | 1.84% | 2,270 | 1 | City |
| Marsing | 2 | 1,248 | 1,231 | 0.24% | 1,833 | 1 | City |
| Grand View | 3 | 469 | 444 | 1.08% | 816 | 1 | City |
| Murphy | 4 | 215 | 190 | 6.97% | 54 | 4 | CDP |
| Bruneau | 5 | 51 | 60 | 6.25% | 32 | 2 | CDP |
Homedale is the largest city in Owyhee County, with a population of 3,205.
Bruneau is the smallest city in Owyhee County, with a population of 51.
There are 5 cities in Owyhee County, Idaho.