ZIP Code 81647

81647 is one of Colorado's ZIP codes, delivering to addresses in New Castle, Garfield County.

City: New Castle
County: Garfield County
State: Colorado
Prefix: 816xx

Where this code sits

81647 is part of the 816xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to New Castle.

New Castle Colorado ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 81647 delivers to without sharing its boundary.

ZIP codes nearest 81647

The ZIP codes whose reference points sit closest to 81647.
ZIP code	Distance	Delivers to
ZIP code 81652	8.1 mi	Silt, CO
ZIP code 81602	12 mi	Glenwood Springs, CO
ZIP code 81601	12 mi	Glenwood Springs, CO
ZIP code 81650	13 mi	Rifle, CO
ZIP code 81636	27 mi	Battlement Mesa, CO
ZIP code 81635	28 mi	Parachute, CO
ZIP code 81623	29 mi	Carbondale, CO
ZIP code 81624	30 mi	Collbran, 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 81647, plotted from its record coordinates.

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

Scope ZIP code 81647. 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.