Below is a list of Flat TX zip codes. For your research we have also included Flat Area Code, Time Zone, UTC and the local Coryell County FIPS Code. Each Flat Texas zip code has a center Longitude / Latitude point (the Flat center is -97.63020324707 / 31.308500289917). For your convenience we have also indicated if that zip code in Flat observes Daylight Savings time.