Below is a list of Kirby TX zip codes. For your research we have also included Kirby Area Code, Time Zone, UTC and the local Bexar County FIPS Code. Each Kirby Texas zip code has a center Longitude / Latitude point (the Kirby center is -98.380996704102 / 29.446899414062). For your convenience we have also indicated if that zip code in Kirby observes Daylight Savings time.