Below is a list of Castell TX zip codes. For your research we have also included Castell Area Code, Time Zone, UTC and the local Llano County FIPS Code. Each Castell Texas zip code has a center Longitude / Latitude point (the Castell center is -98.958396911621 / 30.702299118042). For your convenience we have also indicated if that zip code in Castell observes Daylight Savings time.