16 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Baker City | 1 | 10,134 | 10,099 | -0.01% | 1,415 | 7 | City |
| Baker City | 2 | 10,134 | 10,136 | -0.01% | 1,415 | 7 | City |
| Huntington | 3 | 506 | 500 | 0.2% | 684 | 1 | City |
| Huntington | 4 | 506 | 501 | 0.2% | 684 | 1 | City |
| Haines | 5 | 375 | 373 | 0% | 496 | 1 | City |
| Haines | 6 | 375 | 374 | 0% | 496 | 1 | City |
| Halfway | 7 | 358 | 357 | 0% | 962 | 0 | City |
| Halfway | 8 | 358 | 358 | 0% | 962 | 0 | City |
| Sumpter | 9 | 207 | 206 | 0% | 95 | 2 | City |
| Sumpter | 10 | 207 | 207 | 0% | 95 | 2 | City |
| Richland | 11 | 169 | 167 | 0% | 1,610 | 0 | City |
| Richland | 12 | 169 | 168 | 0% | 1,610 | 0 | City |
| Unity | 13 | 42 | 41 | 0% | 66 | 1 | City |
| Unity | 14 | 42 | 41 | 0% | 66 | 1 | City |
| Granite | 15 | 29 | 29 | 0% | 78 | 0 | City |
| Granite | 16 | 29 | 29 | 0% | 78 | 0 | City |
Baker City is the largest city in Baker County, with a population of 10,134.
Granite is the smallest city in Baker County, with a population of 29.
There are 16 cities in Baker County, Oregon.