Below is a list of Willacy County TX zip codes. For your research we have also included Willacy County Area Code, Time Zone, UTC and the local County FIPS Code. Each Willacy County Texas zip code has a center Longitude / Latitude point (the Willacy County center is -97.708801269531 / 26.455099105835). For your convenience we have also indicated if that zip code in Willacy County observes Daylight Savings time.