78387 is zip code located in Sinton, Texas. The population is 9,521, making 78387 the largest zipcode in Sinton and the largest in San Patricio County.
There are 5 public schools in 78387 with an average Homefacts rating of C. The total crime rate for Sinton is high , and there are 3 registered sex offenders residing in the zip code 78387. Unemployment in 78387 is high.