Sierra County, New Mexico ZIP codes
10 ZIP codes are in Sierra County, plus 1 that cross in from neighboring counties.
- ZIP codes
- 10
- Population in these ZIPs
- 11,500
- Avg. median income
- $39,500population-weighted
- Cities & towns
- 10
Click anywhere on the map to see which ZIP code it's in.
ZIP codes in Sierra County
| ZIP code | City | Population | Median income | Typical home value |
|---|---|---|---|---|
| 87654 PO Box | Spaceport City | — | — | — |
| 87901 | Truth Or Consequences | 6,378 | $34,242 | $162,600 |
| 87930 | Arrey | 718 | $38,085 | — |
| 87931 | Caballo | 703 | — | $194,000 |
| 87933 | Derry | 0 | — | — |
| 87935 | Elephant Butte | 2,094 | $51,033 | $239,400 |
| 87939 | Monticello | 206 | — | — |
| 87942 | Williamsburg | 1,005 | $42,308 | $174,300 |
| 87943 | Winston | 191 | — | — |
| 88042 | Hillsboro | 205 | $75,137 | $240,900 |
ZIP codes partly in Sierra County
These ZIP codes are mostly in a neighboring county but cover part of Sierra County.
| ZIP code | City | County | Population | Median income | Typical home value |
|---|---|---|---|---|---|
| 87936 | Garfield | Doña Ana County | 214 | $22,043 | $180,800 |
Population and median household income: ACS 2020–2024 5-year estimates. Typical home value: Zillow Home Value Index (September 2026) where available, otherwise the ACS median owner-reported value. "PO Box" marks ZIP codes with no delivery area of their own. Methodology
Cities and towns in Sierra County
Nearby counties
Frequently asked questions
How many ZIP codes are in Sierra County, New Mexico?
10 ZIP codes are mainly in Sierra County, and 1 more ZIP codes from neighboring areas reach partly into it.
What cities are in Sierra County?
ZIP codes in Sierra County use the city names Arrey, Caballo, Derry, Elephant Butte, Hillsboro, Monticello, Spaceport City, Truth Or Consequences, Williamsburg and Winston.