| Locality | Post Code |
|---|---|
| Alamosa, Alamosa | 81101 |
| Carmel, Alamosa | 81101 |
| East Alamosa, Alamosa | 81101 |
| Estrella, Alamosa | 81101 |
| Great Sand Dunes National Monument, Alamosa | 81101 |
| Henry, Alamosa | 81101 |
| Hooper, Alamosa | 81136 |
| Mosca, Alamosa | 81146 |
| Stanley, Alamosa | 81101 |
| Washington, Alamosa | 81101 |
| Waverly, Alamosa | 81101 |