Below is a list of San Isidro TX zip codes. For your research we have also included San Isidro Area Code, Time Zone, UTC and the local Starr County FIPS Code. Each San Isidro Texas zip code has a center Longitude / Latitude point (the San Isidro center is -98.454002380371 / 26.716400146484). For your convenience we have also indicated if that zip code in San Isidro observes Daylight Savings time.