Below is a list of College Grove TN zip codes. For your research we have also included College Grove Area Code, Time Zone, UTC and the local Williamson County FIPS Code. Each College Grove Tennessee zip code has a center Longitude / Latitude point (the College Grove center is -86.674697875977 / 35.787998199463). For your convenience we have also indicated if that zip code in College Grove observes Daylight Savings time.