8 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Baker City | 1 | 10,285 | 10,135 | 0.29% | 1,436 | 7.16 | City |
| Huntington | 2 | 514 | 503 | 0.39% | 695 | 0.74 | City |
| Haines | 3 | 383 | 373 | 0.52% | 507 | 0.76 | City |
| Halfway | 4 | 370 | 359 | 0.54% | 995 | 0.37 | City |
| Sumpter | 5 | 210 | 207 | 0.48% | 96 | 2.18 | City |
| Richland | 6 | 171 | 168 | 0.59% | 1,629 | 0.10 | City |
| Unity | 7 | 44 | 41 | 2.33% | 69 | 0.64 | City |
| Granite | 8 | 30 | 30 | 0% | 81 | 0.37 | City |
Baker City is the largest city in Baker County, with a population of 10,285.
Granite is the smallest city in Baker County, with a population of 30.
There are 8 cities in Baker County, Oregon.