ZIP Code 80544

80544 is one of Colorado's ZIP codes, delivering to addresses in Niwot, Boulder County.

City: Niwot
County: Boulder County
State: Colorado
Prefix: 805xx

Where this code sits

80544 is part of the 805xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Niwot.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 80544 delivers to without sharing its boundary.

ZIP codes nearest 80544

The ZIP codes whose reference points sit closest to 80544.
ZIP code	Distance	Delivers to
ZIP code 80503	3.6 mi	Longmont, CO
ZIP code 80301	4.4 mi	Boulder, CO
ZIP code 80502	5.7 mi	Longmont, CO
ZIP code 80516	6.2 mi	Erie, CO
ZIP code 80533	6.3 mi	Hygiene, CO
ZIP code 80501	6.3 mi	Longmont, CO
ZIP code 80304	7.3 mi	Boulder, CO
ZIP code 80309	8.1 mi	Boulder, 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 80544, plotted from its record coordinates.

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

Scope ZIP code 80544. 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.