ZIP Code 91326

91326 is one of California's ZIP codes, delivering to addresses in Porter Ranch, Los Angeles County.

City: Porter Ranch
County: Los Angeles County
State: California
Prefix: 913xx

Where this code sits

91326 is part of the 913xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Porter Ranch.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 91326 delivers to without sharing its boundary.

ZIP codes nearest 91326

The ZIP codes whose reference points sit closest to 91326.
ZIP code	Distance	Delivers to
ZIP code 91311	0.6 mi	Chatsworth, CA
ZIP code 91313	1.1 mi	Chatsworth, CA
ZIP code 91324	2.7 mi	Northridge, CA
ZIP code 91304	3.4 mi	Canoga Park, CA
ZIP code 91394	3.4 mi	Granada Hills, CA
ZIP code 91396	3.4 mi	Winnetka, CA
ZIP code 91327	3.5 mi	Northridge, CA
ZIP code 91328	3.5 mi	Northridge, 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 91326, plotted from its record coordinates.

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

Scope ZIP code 91326. 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.