Below is a list of Signal Hill CA zip codes. For your research we have also included Signal Hill Area Code, Time Zone, UTC and the local Los Angeles County FIPS Code. Each Signal Hill California zip code has a center Longitude / Latitude point (the Signal Hill center is -118.16799926758 / 33.804500579834). For your convenience we have also indicated if that zip code in Signal Hill observes Daylight Savings time.