ZIP Code 80121

80121 is one of Colorado's ZIP codes, delivering to addresses in Littleton, Arapahoe County.

City: Littleton
County: Arapahoe County
State: Colorado
Prefix: 801xx

Where this code sits

80121 is part of the 801xx range, the group of codes handled by one mail processing centre. Littleton is served by 16 ZIP codes in total; the full list, with the county each falls in, is on the Littleton page.

Littleton Colorado ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 80121 delivers to without sharing its boundary.

ZIP codes nearest 80121

The ZIP codes whose reference points sit closest to 80121.
ZIP code	Distance	Delivers to
ZIP code 80122	2.1 mi	Littleton, CO
ZIP code 80113	2.1 mi	Englewood, CO
ZIP code 80120	2.8 mi	Littleton, CO
ZIP code 80150	3.1 mi	Englewood, CO
ZIP code 80151	3.1 mi	Englewood, CO
ZIP code 80155	3.1 mi	Englewood, CO
ZIP code 80160	3.4 mi	Littleton, CO
ZIP code 80161	3.4 mi	Littleton, 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 80121, plotted from its record coordinates.

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

Scope ZIP code 80121. 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.