ZIP Code 90621

90621 is one of California's ZIP codes, delivering to addresses in Buena Park, Orange County.

City: Buena Park
County: Orange County
State: California
Prefix: 906xx

Where this code sits

90621 is part of the 906xx range, the group of codes handled by one mail processing centre. Buena Park is served by 4 ZIP codes in total; the full list, with the county each falls in, is on the Buena Park page.

Buena Park California ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 90621 delivers to without sharing its boundary.

ZIP codes nearest 90621

The ZIP codes whose reference points sit closest to 90621.
ZIP code	Distance	Delivers to
ZIP code 90624	1.5 mi	Buena Park, CA
ZIP code 92837	1.7 mi	Fullerton, CA
ZIP code 92833	2.0 mi	Fullerton, CA
ZIP code 90622	2.3 mi	Buena Park, CA
ZIP code 90638	2.4 mi	La Mirada, CA
ZIP code 90620	2.5 mi	Buena Park, CA
ZIP code 90639	2.6 mi	La Mirada, CA
ZIP code 92850	3.0 mi	Anaheim, CA

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 90621, plotted from its record coordinates.

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

Scope ZIP code 90621. 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.