Below is a list of Heiskell TN zip codes. For your research we have also included Heiskell Area Code, Time Zone, UTC and the local Knox County FIPS Code. Each Heiskell Tennessee zip code has a center Longitude / Latitude point (the Heiskell center is -84.054100036621 / 36.081901550293). For your convenience we have also indicated if that zip code in Heiskell observes Daylight Savings time.