ZIP Code 81643

81643 is one of Colorado's ZIP codes, delivering to addresses in Mesa, Mesa County.

City: Mesa
County: Mesa County
State: Colorado
Prefix: 816xx

Where this code sits

81643 is part of the 816xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Mesa.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 81643 delivers to without sharing its boundary.

ZIP codes nearest 81643

The ZIP codes whose reference points sit closest to 81643.
ZIP code	Distance	Delivers to
ZIP code 81646	3.0 mi	Molina, CO
ZIP code 81624	11 mi	Collbran, CO
ZIP code 81630	12 mi	De Beque, CO
ZIP code 81526	15 mi	Palisade, CO
ZIP code 81636	19 mi	Battlement Mesa, CO
ZIP code 81520	19 mi	Clifton, CO
ZIP code 81413	20 mi	Cedaredge, CO
ZIP code 81503	20 mi	Grand Junction, 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 81643, plotted from its record coordinates.

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

Scope ZIP code 81643. 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.