| Locality | Post Code |
|---|---|
| Arrey, Sierra | 87930 |
| Caballo, Sierra | 87931 |
| Chloride, Sierra | 87943 |
| Cuchillo, Sierra | 87901 |
| Derry, Sierra | 87933 |
| Dusty, Sierra | 87943 |
| Elephant Butte, Sierra | 87935 |
| Engle, Sierra | 87935 |
| Hillsboro, Sierra | 88042 |
| Kingston, Sierra | 88042 |
| Las Palomas, Sierra | 87942 |
| Monticello, Sierra | 87939 |
| Rock Canyon, Sierra | 87935 |
| Spaceport America, Sierra | 87654 |
| Spaceport City, Sierra | 87654 |
| Truth Or Consequences, Sierra | 87901 |
| Williamsburg, Sierra | 87942 |
| Winston, Sierra | 87943 |