ZIP Code 80721

80721 is one of Colorado's ZIP codes, delivering to addresses in Amherst, Phillips County.

City: Amherst
County: Phillips County
State: Colorado
Prefix: 807xx

Where this code sits

80721 is part of the 807xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Amherst.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 80721 delivers to without sharing its boundary.

ZIP codes nearest 80721

The ZIP codes whose reference points sit closest to 80721.
ZIP code	Distance	Delivers to
ZIP code 80734	9.1 mi	Holyoke, CO
ZIP code 69168	13 mi	Venango, NE
ZIP code 80746	17 mi	Paoli, CO
ZIP code 80737	20 mi	Julesburg, CO
ZIP code 80744	21 mi	Ovid, CO
ZIP code 80731	23 mi	Haxtun, CO
ZIP code 80749	25 mi	Sedgwick, CO
ZIP code 69140	26 mi	Grant, NE

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 80721, plotted from its record coordinates.

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

Scope ZIP code 80721. 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.