US Postal Service ZIP Code boundaries. For more information, click here.

This layer shows parcel-based postal ZIP Code boundaries encompassing all of Los Angeles County. Sources: United States Postal Service, County of Los Angeles Office of the Assessor, County of Los Angeles Registrar-Recorder / County Clerk (RRCC) Countywide Address Management System (CAMS), U.S. Census Bureau TIGER line data, LAR-IAC digital orthographic and oblique aerial imagery, and Google Maps / Street View. Created: 2010 (created using these sources by the Los Angeles County Regional Planning, GIS Section).

UPDATE HISTORY:

• 7/1/2015 - changed two parcels parcels with the wrong ZIP Code

• 4/20/2016 - Update between 90059 & 90262 @ Mona Blvd. (Lynwood Sheriff Station)

• 6/23/2016 - Update between 90058, 90040 & 90201 @ E 52nd Dr. (90201 is now a single polygon)

• 7/7/2016 - Update between 90044 & 90003 @ W. 70th St.

• 7/7/2016 - Update between 90011 & 90058 on Long Beach Ave.

• 7/7/2016 - Update to 90704 for both Catalina & San Clemente Islands. Area modified to mirror existing

• 9/22/2021 - Update to boundary between ZIP Code 91355 and 91381 to reflect USPS changes related to Mission Village

• 1/03/2022 - Update to boundary between ZIP Code 91354 and 91390 to reflect USPS changes related to Tesoro Highlands Development

• 1/25/2022 - Update to various ZIP Codes (91321,91350,91351,91354,91355,91384,91387) to match USPS per DCFS notes

• 09/01/2022 - Update to various ZIP Codes (91710, merged 92821 into 91748, merged 92823 into 91765) to match USPS per DCFS notes (these zipcodes are all Brea)

Legal vs. Postal Cities

Many users confuse the name the Post Office delivers to (e.g. Van Nuys, Hollywood) as a legal city (in this case Los Angeles), when they are, in fact, a postal city. The County contains 88 legal cities, and over 400 postal names that are tied to the ZIP Codes. To support useability and geocoding, we have attached the first 3 postal cities to each address, based upon its ZIP Code.

For a full list of zipcode to postal city correlations, see this file: zipcodexxpostalcities (201406) – Excel file