Below is a list of San Ygnacio TX zip codes. For your research we have also included San Ygnacio Area Code, Time Zone, UTC and the local Zapata County FIPS Code. Each San Ygnacio Texas zip code has a center Longitude / Latitude point (the San Ygnacio center is -99.436996459961 / 27.042100906372). For your convenience we have also indicated if that zip code in San Ygnacio observes Daylight Savings time.