Alamosa

Source:

Colorado

Alamosa is a sparsely populated county in Colorado with 3 ZIP codes, 15,467 people, and below-median household income among US counties. All data is sourced from the U.S. Census Bureau American Community Survey (ACS) 2023 5-Year Estimates.

National county placement

According to ACS 5-Year Estimates, Alamosa, CO sits among US counties with a below-median household income, on a sparsely populated county population base, across a handful of delivery areas.

25th pct
household income vs 3,210 US counties
15,467
combined ZIP population
3
USPS ZIP codes covered
$57,283
avg ZIP median income

Income percentile ranks this county's average ZIP median household income against 3,210 US counties with ACS income on at least one ZIP.

Alamosa lands in the national county income distribution as below-median household income on sparsely populated county footing (FIPS 08003, 3 ZIPs, combined population 15,467). On this short ZIP list the county page is mainly the FIPS bridge - household ACS fields live on the primary ZIP.

Below-median income with few ZIPs: start cost-of-living reads on the primary code (81101), not the county mean. This page exists to join FIPS 08003 to HUD/FBI tables once the ZIP is chosen.

Population sits in the five-to-twenty-five thousand band with few ZIPs - still ZIP-first for household fields, but the county seat ZIP (usually the densest row) is worth a second glance before the FIPS overlays.

Within Colorado, Kiowa is the closest lower-income county and Fremont the closest higher-income county by average ZIP household income. Their 2 and 7 ZIP footprints are the immediate statewide comparison set for Alamosa. Use those locations as statewide context before treating the county average as a local-market answer.

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3

Total ZIPs

15,467

Total Population

ZIP Codes in Alamosa

Side-by-side: Compare 81101 vs 81146 →

ZIP Code City Population Density
81101 Alamosa 14,675 14
81146 Mosca 531 1
81136 Hooper 261 1

What are common questions about ZIP codes in this county?

What is the population of Alamosa?
Alamosa has a total population of 15,467 across 3 ZIP codes, based on U.S. Census Bureau ACS 2023 data.
What ZIP codes are in Alamosa?
Alamosa includes 3 ZIP codes: 81101, 81146, 81136.
Data sources

Source: U.S. Census Bureau, American Community Survey (ACS) 5-Year Estimates (2023). Verify with Census Bureau →

Source: HUD USPS Crosswalk (ZIP-to-county mapping). Verify with HUD →

PlainZIP is not affiliated with the U.S. Census Bureau or any government agency.

Related

Compare any two ZIPs side by side

Read our methodology : how this data is sourced, computed, and verified.