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zipcodes.pro — STATE/CO/COUNTY/ALAMOSA

Alamosa County, CO ZIP codes

Alamosa County, CO has 4 ZIP codes, in 3 towns: 81101, 81146, 81136 and 81102.

The county seat is Alamosa.

ZIP codes
4
Towns
3
County seat
Alamosa
County FIPS
08003
Population
16,581
Median household income
$55,397
Land area
723 sq mi
Area code
719
Metro area
Alamosa

Alamosa County ZIP codes by town

Alamosa (county seat)
81101, 81102

Each ZIP code is listed under the county most of its land lies in and the town the Postal Service names it for; a ZIP code's own page shows exactly how it is split.

Map of Alamosa County ZIP codes

81101811028113681146

The ZIP codes of Alamosa County, shaded. Outlines are Census ZIP Code Tabulation Areas (2020), which approximate the mail routes; PO-box and single-address codes have no area and are not drawn. Click any area to open its ZIP code.

Alamosa County in numbers

About 16,581 people live in Alamosa County, in 6,648 households, the 31st most populous of Colorado's 64 counties. The median household income is $55,397 a year, 42% below the Colorado median of $95,470 (US: $80,734). The median owner-occupied home is valued at $239,100 (56% below the Colorado median), and median gross rent is $907 a month. The median age is 33.2; 32.4% of adults 25 and over hold a bachelor's degree or higher (45.7% across Colorado); the average commute takes 16 minutes.

Population16,581Alamosa16,581
Households6,648Alamosa6,648
Median age33.2Alamosa33.2Colorado37.7US 38.9
Median household income$55,397Alamosa$55,397Colorado$95,470US $80,734
Median home value$239,100Alamosa$239,100Colorado$539,400US $332,700
Median gross rent$907Alamosa$907Colorado$1,761US $1,413
Bachelor's degree or higher32.4%Alamosa32.4%Colorado45.7%US 35.7%
Mean commute15.9 minAlamosa15.9 minColorado25.2 minUS 26.4 min
Population density23 / sq miAlamosa23 / sq mi

U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates. Survey estimates carry margins of error, wider for small places. Sources and methods.

Largest towns in Alamosa County

Largest towns in Alamosa County
TownZIP codesPopulation
Alamosa 2 9,879
Mosca 1 637
Hooper 1 152

Population of the census place of that name where there is one, otherwise of the ZIP codes the Postal Service addresses by it. A town's ZIP codes can reach past the county line.

Neighbouring counties

Counties that share a ZIP code with Alamosa County.

Not sure you are in Alamosa County? What county am I in? answers from your location, near a county line included.

Every ZIP code in Alamosa County, with figures

ZIP codes in Alamosa County
ZIP City Type Population Median income Median home
81101 Alamosa , CO Standard 15,550 $54,844 $240,400
81102 Alamosa , CO No street area — — —
81136 Hooper , CO Standard 305 $47,448 $193,300
81146 Mosca , CO Standard 637 $69,556 $232,100

Cite this page

zipcodes.pro. “Alamosa County ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/state/co/county/alamosa

Underlying data is public domain or openly licensed — sources, vintages and licences.