Alamosa ZIP codes — Alamosa County, Colorado

Alamosa County is a mid-size town in Colorado, with 16,515 residents counted in the Census American Community Survey 2019-2023 ACS 5-year estimates. The median age here is 33.1 years against 39.1 nationally, a distinctly younger profile, typical of places with students, military posts or a fast-growing family population. Places under 65,000 residents only appear in the five-year release, never the one-year file, so these values pool sixty months of responses and lag the current year by design.

Households in Alamosa County earn a median of $51,445 a year, 34.5% below the national figure of $78,538. The median is the midpoint household, not an average, so a handful of very high earners cannot drag it upward the way they distort a mean. Poverty reaches 18.2% of residents here, above the 12.4% national rate.

The typical owner-occupied home in Alamosa County is valued at $218,800, 27.9% below the national figure, while median gross rent runs $904 a month, 35.7% below the national figure, or roughly $10,848 across a full year. A household on the local median income would put about 21.1% of gross pay toward that rent against the federal 30% cost-burden threshold, so renting here is within the standard affordability guideline. The home-price-to-income ratio works out to 4.3×, against roughly 3.9× nationally, so buying is harder here than in the average US market. 56.4% of occupied homes are owner-occupied versus 65% nationally, so the market leans more heavily on renters. Rent is reported gross — contract rent plus tenant-paid utilities — which is why it runs above the advertised price on a listing for the same unit.

No figure on this page is estimated by us; each one comes straight from the published ACS tables for this area. Small-area estimates still carry wider margins of error than state or national figures, so check the linked ACS tables before relying on them for lending, appraisal or legal work.