Below is a list of Oceanside CA zip codes. For your research we have also included Oceanside Area Code, Time Zone, UTC and the local San Diego County FIPS Code. Each Oceanside California zip code has a center Longitude / Latitude point (the Oceanside center is -117.3690032959 / 33.183601379395). For your convenience we have also indicated if that zip code in Oceanside observes Daylight Savings time.