ZIP Code 91321

91321 is one of California's ZIP codes, delivering to addresses in Newhall, Los Angeles County.

City: Newhall
County: Los Angeles County
State: California
Prefix: 913xx

Where this code sits

91321 is part of the 913xx range, the group of codes handled by one mail processing centre. Newhall is served by 2 ZIP codes in total.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 91321 delivers to without sharing its boundary.

ZIP codes nearest 91321

The ZIP codes whose reference points sit closest to 91321.
ZIP code	Distance	Delivers to
ZIP code 91322	0.6 mi	Newhall, CA
ZIP code 91380	1.4 mi	Santa Clarita, CA
ZIP code 91382	1.4 mi	Santa Clarita, CA
ZIP code 91383	1.4 mi	Santa Clarita, CA
ZIP code 91355	2.2 mi	Valencia, CA
ZIP code 91350	3.9 mi	Santa Clarita, CA
ZIP code 91386	4.2 mi	Canyon Country, CA
ZIP code 91354	4.7 mi	Valencia, 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 91321, plotted from its record coordinates.

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

Scope ZIP code 91321. 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.