Below is a list of Big Oak Flat CA zip codes. For your research we have also included Big Oak Flat Area Code, Time Zone, UTC and the local Tuolumne County FIPS Code. Each Big Oak Flat California zip code has a center Longitude / Latitude point (the Big Oak Flat center is -120.25800323486 / 37.823398590088). For your convenience we have also indicated if that zip code in Big Oak Flat observes Daylight Savings time.