| ZIP Codes: | 4 ZIP Codes (3 Standard, 0 PO Box, 1 Unique) [See All] |
| Area Code: | 719 |
| Timezone: | Mountain (GMT -07:00) |
| Local Time: | 2:11:31 PM |
| Population: | 16,492 [See All] |
| FIPS: | 08003 |
| CBSA: | Alamosa, CO |
| Land Area: | 772 sq mi |
| Water Area: | 1 sq mi |
| Coordinates: | 37.5938, -105.7927 |
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16,492 residents live across 4 ZIPs covering 772 sq mi, served by 3 distinct USPS-recognized cities.
Population moved from 16,153 to 16,492 from 2014 to 2024 — a +2.1% change. 2 ZIPs gained residents, 1 lost.
The county's wealthiest ZIP 81146 (Mosca, $69,556 median) and poorest ZIP 81136 (Hooper, $47,448) are 15.5 miles apart — a 1.5× income gap across local geography.
Median home values vary 1.2× across this county — from $193,300 in 81136 (Hooper) to $240,400 in 81101 (Alamosa).
Density varies 20× across the county — from 2 people/sq mi in 81146 (Mosca) to 41 in 81101 (Alamosa).
Educational attainment ranges from 24.7% bachelor's+ in 81136 (Hooper) to 37.5% in 81146 (Mosca) — the breadth of educational profiles across the area.
Within Colorado, this is the #28 most populous of 65 counties and ranks #50 for median household income .
Hosts 1 single-entity Unique ZIP: 81102Adams State College .
Weighted by population, the typical household earns about $55,275 across the county — reflecting what a typical resident sees, not a simple ZIP average.
32.5% of adults age 25+ hold a bachelor's degree or higher (3,290 of 10,131 reporting).
3 Standard delivery, 0 PO Box only, 1 single-entity Unique ZIPs serve this county.
A frontier county — vast land area with only a few residents per square mile. Daily life looks very different here than in the country's denser counties.
One ZIP holds the majority of this county's population — a sign of a county built around a single city or town.