Alamosa, CO ZIP codes

Alamosa, Colorado has 2 ZIP codes, including 1 PO Box ZIP. They are in Alamosa County.

Population in these ZIPs: 15,550
Avg. median income: $54,800population-weighted
Typical home value: $313,700population-weighted
Metro area: Alamosa, CO

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Alamosa, CO ZIP codes list

Alamosa, CO ZIP codes
ZIP code	County	Population	Median income	Typical home value
81101	Alamosa County	15,550	$54,844	$313,700
81102 PO Box	Alamosa County	—	—	—

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 near Alamosa

Monte Vista 16 mi
Mosca 16 mi
Blanca 17 mi
Hooper 17 mi
Sanford 18 mi
Capulin 18 mi
La Jara 20 mi
Manassa 22 mi
Romeo 22 mi
Center 26 mi
Conejos 27 mi
Crestone 29 mi

Frequently asked questions

What is the ZIP code for Alamosa, CO?

Alamosa, CO has 2 ZIP codes: 81101 and 81102.

What county is Alamosa, Colorado in?

Alamosa ZIP codes are in Alamosa County.

Which Alamosa ZIP codes are PO Boxes?

81102 is a PO Box or single-organization ZIP code; it has no residential delivery area.