Below is a list of Greenback TN zip codes. For your research we have also included Greenback Area Code, Time Zone, UTC and the local Loudon County FIPS Code. Each Greenback Tennessee zip code has a center Longitude / Latitude point (the Greenback center is -84.168998718262 / 35.659900665283). For your convenience we have also indicated if that zip code in Greenback observes Daylight Savings time.