ZIP Code 81601

81601 is one of Colorado's ZIP codes, delivering to addresses in Glenwood Springs, Garfield County.

City: Glenwood Springs
County: Garfield County
State: Colorado
Prefix: 816xx

Where this code sits

81601 is part of the 816xx range, the group of codes handled by one mail processing centre. Glenwood Springs is served by 2 ZIP codes in total; the full list, with the county each falls in, is on the Glenwood Springs page.

Glenwood Springs Colorado ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 81601 delivers to without sharing its boundary.

ZIP codes nearest 81601

The ZIP codes whose reference points sit closest to 81601.
ZIP code	Distance	Delivers to
ZIP code 81602	1.4 mi	Glenwood Springs, CO
ZIP code 81647	12 mi	New Castle, CO
ZIP code 81652	18 mi	Silt, CO
ZIP code 81623	20 mi	Carbondale, CO
ZIP code 81637	21 mi	Gypsum, CO
ZIP code 81621	21 mi	Basalt, CO
ZIP code 81650	25 mi	Rifle, CO
ZIP code 81654	26 mi	Snowmass, 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 81601, plotted from its record coordinates.

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

Scope ZIP code 81601. 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.