Below is a list of Salt Lake County UT zip codes. For your research we have also included Salt Lake County Area Code, Time Zone, UTC and the local County FIPS Code. Each Salt Lake County Utah zip code has a center Longitude / Latitude point (the Salt Lake County center is -111.9049987793 / 40.694999694824). For your convenience we have also indicated if that zip code in Salt Lake County observes Daylight Savings time.