ZIP Code 81237

81237 is one of Colorado's ZIP codes, delivering to addresses in Ohio City, Gunnison County.

City: Ohio City
County: Gunnison County
State: Colorado
Prefix: 812xx

Where this code sits

81237 is part of the 812xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Ohio City.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 81237 delivers to without sharing its boundary.

ZIP codes nearest 81237

The ZIP codes whose reference points sit closest to 81237.
ZIP code	Distance	Delivers to
ZIP code 81239	4.1 mi	Parlin, CO
ZIP code 81241	5.1 mi	Pitkin, CO
ZIP code 81210	16 mi	Almont, CO
ZIP code 81248	16 mi	Sargents, CO
ZIP code 81227	17 mi	Monarch, CO
ZIP code 81231	18 mi	Gunnison, CO
ZIP code 81230	18 mi	Gunnison, CO
ZIP code 81224	27 mi	Crested Butte, 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 81237, plotted from its record coordinates.

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

Scope ZIP code 81237. 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.