San Luis Obispo County, California has 35 ZIP codes in this list, from 93401 to 93483. They cover 20 places, among them San Luis Obispo, Los Osos, Arroyo Grande and Atascadero.
The ZIP code areas of San Luis Obispo County add up to about 2,902 square miles of land (7,517 sq km) as the Census Bureau draws them. The largest is 93453 (Santa Margarita), with 691 square miles.
Places with more than one code here: San Luis Obispo (8 codes), Los Osos (2 codes), Arroyo Grande (2 codes).
Using these codes
In an address, the ZIP code comes last, after the city and the two-letter state: San Luis Obispo, CA 93401.
Tap a ZIP code to open it in the look-up, with a copy button for the address line.
A code can cross a county line, and one town can have several codes. The table shows the main place of each code.
"No area" means the Census Bureau draws no area for that code. Such codes are usually for post office boxes or a single building.
Places and counties: GeoNames. Areas: U.S. Census Bureau, 2024 ZIP Code Tabulation Areas. Checked in November 2026. This site is not connected with the United States Postal Service; for mailing, confirm the address with USPS.
ZIP Codes