Below is a list of Sinton TX zip codes. For your research we have also included Sinton Area Code, Time Zone, UTC and the local San Patricio County FIPS Code. Each Sinton Texas zip code has a center Longitude / Latitude point (the Sinton center is -97.510498046875 / 28.036699295044). For your convenience we have also indicated if that zip code in Sinton observes Daylight Savings time.