Alamosa Colorado ZIP Codes
Alamosa holds 2 ZIP codes, all inside one county and one postal prefix.
Every ZIP code in Alamosa
| ZIP code | County |
|---|---|
| 81101 | Alamosa County |
| 81102 | Alamosa County |
We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP. USPS delivery-type products are licensed, and no clean-rights source maps ZIP codes to neighbourhoods — so the Alamosa codes above are listed without a column we would have to invent.
Scope every ZIP code recorded for Alamosa. Source GeoNames US postal codes (2026-07 postal dump) and Census 2024 county Gazetteer (2024 Gazetteer). Updated . ZIP codes are delivery-route groupings, not areas; the boundaries implied by any ZIP map are approximations.
How these codes cluster
Every Alamosa ZIP code begins 811. Those first three digits identify the sectional center facility that processes mail for this part of Colorado. Statewide that range covers 32 ZIP codes, so Alamosa accounts for 6% of it.
Every Colorado ZIP prefix and the region it covers →
Area codes covering Alamosa
ZIP codes and area codes are separate systems — one routes mail, the other routes calls — and they do not share boundaries. The code below serves the same ground Alamosa occupies.
Alamosa Colorado area codes in full →
Where Alamosa's ZIP codes sit
- Reference points and footprint
- Not an official NANPA boundary
- Not a USPS delivery area
Cities near Alamosa
| City | Distance | ZIP codes |
|---|---|---|
| La Jara Colorado ZIP codes | 15 mi | 1 ZIP code |
| Sanford Colorado ZIP codes | 15 mi | 1 ZIP code |
| Monte Vista Colorado ZIP codes | 17 mi | 1 ZIP code |
| Hooper Colorado ZIP codes | 19 mi | 1 ZIP code |
| Blanca Colorado ZIP codes | 20 mi | 1 ZIP code |
| Manassa Colorado ZIP codes | 21 mi | 1 ZIP code |
| Romeo Colorado ZIP codes | 22 mi | 1 ZIP code |
| Center Colorado ZIP codes | 23 mi | 1 ZIP code |
Straight-line distance between place reference points, not driving distance.