ZIP Code 81146

81146 is one of Colorado's ZIP codes, delivering to addresses in Mosca, Alamosa County.

City: Mosca
County: Alamosa County
State: Colorado
Prefix: 811xx

Where this code sits

81146 is part of the 811xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Mosca.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 81146 delivers to without sharing its boundary.

719 Area code 719

ZIP codes nearest 81146

The ZIP codes whose reference points sit closest to 81146.
ZIP code	Distance	Delivers to
ZIP code 81136	7.0 mi	Hooper, CO
ZIP code 81102	12 mi	Alamosa, CO
ZIP code 81101	12 mi	Alamosa, CO
ZIP code 81135	16 mi	Homelake, CO
ZIP code 81125	17 mi	Center, CO
ZIP code 81144	19 mi	Monte Vista, CO
ZIP code 81123	21 mi	Blanca, CO
ZIP code 81131	23 mi	Crestone, CO

Straight-line distance between place reference points, not driving distance. Where a place has no Census Gazetteer point, its postal centroid is used instead.

Each point is the reference point for 81146, plotted from its record coordinates.

Reference points and footprint
Not an official NANPA boundary
Not a USPS delivery area

Scope ZIP code 81146. Source GeoNames US postal codes (2026-07 postal dump) and Census 2024 county Gazetteer (2024 Gazetteer). Updated 15 July 2026. A ZIP code is a set of delivery routes, not an area; the point shown is a record coordinate, not a centre.