ZIP Code 80027

80027 is one of Colorado's ZIP codes, delivering to addresses in Louisville, Boulder County.

City: Louisville
County: Boulder County
State: Colorado
Prefix: 800xx

Where this code sits

80027 is part of the 800xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Louisville.

Louisville Colorado ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 80027 delivers to without sharing its boundary.

ZIP codes nearest 80027

The ZIP codes whose reference points sit closest to 80027.
ZIP code	Distance	Delivers to
ZIP code 80026	2.9 mi	Lafayette, CO
ZIP code 80303	5.0 mi	Boulder, CO
ZIP code 80038	5.1 mi	Broomfield, CO
ZIP code 80305	5.7 mi	Boulder, CO
ZIP code 80020	5.9 mi	Broomfield, CO
ZIP code 80301	6.1 mi	Boulder, CO
ZIP code 80021	6.7 mi	Broomfield, CO
ZIP code 80516	6.9 mi	Erie, 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 80027, plotted from its record coordinates.

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

Scope ZIP code 80027. 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.