Big Oak Flat, California Zip Codes
📍 Big Oak Flat is in Tuolumne County, California with 1 zip code; the most populous is 95305.
Big Oak Flat is a USPS city name in Tuolumne County, California with a Census population of approximately 158 across its ZIP codes. Tuolumne County as a whole has 17 ZIP codes in this directory. Below you'll find every zip code serving Big Oak Flat 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 Big Oak Flat Zip Codes
Big Oak Flat at a Glance
Big Oak Flat has 1 ZIP code in this directory: 1 standard delivery ZIP.
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.
Big Oak Flat Zip Code Map
Interactive map of Big Oak Flat, California zip codes. Click any marker for details.