Below is a list of Holladay UT zip codes. For your research we have also included Holladay Area Code, Time Zone, UTC and the local Salt Lake County FIPS Code. Each Holladay Utah zip code has a center Longitude / Latitude point (the Holladay center is -111.83599853516 / 40.665100097656). For your convenience we have also indicated if that zip code in Holladay observes Daylight Savings time.