77979 is zip code located in Port Lavaca, Texas. The population is 17,577, making 77979 the largest zipcode in Port Lavaca and the largest in Calhoun County.
There are 5 public schools in 77979 with an average Homefacts rating of C+. , and there are 65 registered sex offenders residing in the zip code 77979. Unemployment in 77979 is moderate.