ZIP Code 81639

81639 is one of Colorado's ZIP codes, delivering to addresses in Hayden, Routt County.

City: Hayden
County: Routt County
State: Colorado
Prefix: 816xx

Where this code sits

81639 is part of the 816xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Hayden.

Hayden Colorado ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 81639 delivers to without sharing its boundary.

ZIP codes nearest 81639

The ZIP codes whose reference points sit closest to 81639.
ZIP code	Distance	Delivers to
ZIP code 81626	15 mi	Craig, CO
ZIP code 81625	16 mi	Craig, CO
ZIP code 80487	20 mi	Steamboat Springs, CO
ZIP code 81638	21 mi	Hamilton, CO
ZIP code 80477	22 mi	Steamboat Springs, CO
ZIP code 80488	23 mi	Steamboat Springs, CO
ZIP code 80467	24 mi	Oak Creek, CO
ZIP code 80428	24 mi	Clark, 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 81639, plotted from its record coordinates.

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

Scope ZIP code 81639. 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.