| Locality | Post Code |
|---|---|
| Baker, Baker | 97814 |
| Baker City, Baker | 97814 |
| Bridgeport, Baker | 97819 |
| Durkee, Baker | 97905 |
| Granite, Baker | 97877 |
| Greenhorn, Baker | 97877 |
| Haines, Baker | 97833 |
| Halfway, Baker | 97834 |
| Hereford, Baker | 97837 |
| Huntington, Baker | 97907 |
| Keating, Baker | 97814 |
| Lime, Baker | 97907 |
| Medical Springs, Baker | 97814 |
| Oxbow, Baker | 97840 |
| Richland, Baker | 97870 |
| Rye Valley, Baker | 97907 |
| Sumpter, Baker | 97877 |
| Unity, Baker | 97884 |
| Weatherby, Baker | 97905 |