Los Osos, California Zip Codes
📍 Los Osos is in San Luis Obispo County, California with 2 zip codes; the most populous is 93402.
Los Osos is a USPS city name in San Luis Obispo County, California with a Census population of approximately 15,572 across its ZIP codes. San Luis Obispo County as a whole has 34 ZIP codes in this directory. Below you'll find every zip code serving Los Osos with population, income and home value, a map, and the city's affordability profile.
Population and demographic data sourced from the U.S. Census Bureau American Community Survey (ACS) 5-Year Estimates. ZIP code routing data sourced from the United States Postal Service (USPS).
All Los Osos Zip Codes
Los Osos at a Glance
Los Osos has 2 ZIP codes in this directory: 1 standard delivery ZIP and 1 PO Box or unique ZIP that carries no resident population in Census data. The 1 ZIP with published Census housing data cover 15,572 residents, the largest being 93402 with 15,572 people.
The median ZIP in Los Osos has a household income of $92,174 and a home value of $703,300, a price-to-income ratio of 7.6, above the 6.7 California ZIP median. Median rent across these ZIPs is $1,833 a month.
69% of households in the typical Los Osos ZIP own their home (statewide ZIP median 64%). 46% of adults hold a bachelor's degree, above the 31% statewide median. The median poverty rate is 9.3%, below the 10.8% statewide ZIP median. Overall density is about 562 residents per square mile across 28 square miles of ZIP land area.
Medians are taken across the ZIP codes listed below (each ZIP weighted equally); PO Box and no-data ZIPs are excluded. Definitions on the methodology page; statewide comparisons in the 2026 California ZIP Code Affordability Report.
Los Osos Zip Code Map
Interactive map of Los Osos, California zip codes. Click any marker for details.