Below is a list of Petrolia CA zip codes. For your research we have also included Petrolia Area Code, Time Zone, UTC and the local Humboldt County FIPS Code. Each Petrolia California zip code has a center Longitude / Latitude point (the Petrolia center is -124.28600311279 / 40.324298858643). For your convenience we have also indicated if that zip code in Petrolia observes Daylight Savings time.