ZIP Code 80420

80420 is one of Colorado's ZIP codes, delivering to addresses in Alma, Park County.

City: Alma
County: Park County
State: Colorado
Prefix: 804xx

Where this code sits

80420 is part of the 804xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Alma.

Alma Colorado ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 80420 delivers to without sharing its boundary.

719 Area code 719

ZIP codes nearest 80420

The ZIP codes whose reference points sit closest to 80420.
ZIP code	Distance	Delivers to
ZIP code 80440	5.3 mi	Fairplay, CO
ZIP code 80461	13 mi	Leadville, CO
ZIP code 80424	13 mi	Breckenridge, CO
ZIP code 80429	14 mi	Climax, CO
ZIP code 80432	16 mi	Como, CO
ZIP code 80443	19 mi	Frisco, CO
ZIP code 80456	20 mi	Jefferson, CO
ZIP code 81228	20 mi	Granite, 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 80420, plotted from its record coordinates.

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

Scope ZIP code 80420. 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.