Alamosa County, Colorado ZIP codes
4 ZIP codes are in Alamosa County, plus 2 that cross in from neighboring counties. It's part of the Alamosa, CO micro area.
- ZIP codes
- 4
- Population in these ZIPs
- 16,492
- Avg. median income
- $55,300population-weighted
- Cities & towns
- 3
Click anywhere on the map to see which ZIP code it's in.
ZIP codes in Alamosa County
| ZIP code | City | Population | Median income | Typical home value |
|---|---|---|---|---|
| 81101 | Alamosa | 15,550 | $54,844 | $313,700 |
| 81102 PO Box | Alamosa | — | — | — |
| 81136 | Hooper | 305 | $47,448 | $193,300 |
| 81146 | Mosca | 637 | $69,556 | $349,300 |
ZIP codes partly in Alamosa County
These ZIP codes are mostly in a neighboring county but cover part of Alamosa County.
| ZIP code | City | County | Population | Median income | Typical home value |
|---|---|---|---|---|---|
| 81125 | Center | Saguache County | 3,362 | $56,250 | $182,200 |
| 81144 | Monte Vista | Rio Grande County | 6,543 | $64,662 | $268,400 |
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 Alamosa County
Nearby counties
Frequently asked questions
How many ZIP codes are in Alamosa County, Colorado?
4 ZIP codes are mainly in Alamosa County, and 2 more ZIP codes from neighboring areas reach partly into it.
What cities are in Alamosa County?
ZIP codes in Alamosa County use the city names Alamosa, Hooper and Mosca.
What metro area is Alamosa County in?
Alamosa County is part of the Alamosa, CO micropolitan statistical area.