Below is a list of Mclennan County TX zip codes. For your research we have also included Mclennan County Area Code, Time Zone, UTC and the local County FIPS Code. Each Mclennan County Texas zip code has a center Longitude / Latitude point (the Mclennan County center is -97.157600402832 / 31.533800125122). For your convenience we have also indicated if that zip code in Mclennan County observes Daylight Savings time.