78667 is zip code located in San Marcos, Texas. The population is , making 78667 the 3rd largest zipcode in San Marcos and the 8th largest in Hays County.
There are 0 public schools in 78667 with an average Homefacts rating of A+. The total crime rate for San Marcos is high , and there are 0 registered sex offenders residing in the zip code 78667. Unemployment in 78667 is moderate.