ZIP Code 80520

80520 is one of Colorado's ZIP codes, delivering to addresses in Firestone, Weld County.

City: Firestone
County: Weld County
State: Colorado
Prefix: 805xx

Where this code sits

80520 is part of the 805xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Firestone.

Firestone Colorado ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 80520 delivers to without sharing its boundary.

ZIP codes nearest 80520

The ZIP codes whose reference points sit closest to 80520.
ZIP code	Distance	Delivers to
ZIP code 80530	1.1 mi	Frederick, CO
ZIP code 80504	1.4 mi	Longmont, CO
ZIP code 80514	2.0 mi	Dacono, CO
ZIP code 80621	7.2 mi	Fort Lupton, CO
ZIP code 80516	7.9 mi	Erie, CO
ZIP code 80542	9.1 mi	Mead, CO
ZIP code 80502	9.5 mi	Longmont, CO
ZIP code 80501	9.8 mi	Longmont, 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 80520, plotted from its record coordinates.

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

Scope ZIP code 80520. 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.