ZIP Code 91311

91311 is one of California's ZIP codes, delivering to addresses in Chatsworth, Los Angeles County.

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

Where this code sits

91311 is part of the 913xx range, the group of codes handled by one mail processing centre. Chatsworth 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 91311 delivers to without sharing its boundary.

ZIP codes nearest 91311

The ZIP codes whose reference points sit closest to 91311.
ZIP code	Distance	Delivers to
ZIP code 91313	0.6 mi	Chatsworth, CA
ZIP code 91326	0.6 mi	Porter Ranch, CA
ZIP code 91304	2.9 mi	Canoga Park, CA
ZIP code 91324	3.0 mi	Northridge, CA
ZIP code 91396	3.3 mi	Winnetka, CA
ZIP code 91306	3.5 mi	Winnetka, CA
ZIP code 91327	3.7 mi	Northridge, CA
ZIP code 91328	3.7 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 91311, plotted from its record coordinates.

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

Scope ZIP code 91311. 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.