Below is a list of Westlake TX zip codes. For your research we have also included Westlake Area Code, Time Zone, UTC and the local Denton County FIPS Code. Each Westlake Texas zip code has a center Longitude / Latitude point (the Westlake center is -97.233001708984 / 33.007499694824). For your convenience we have also indicated if that zip code in Westlake observes Daylight Savings time.