78643 is zip code located in Llano, Texas. The population is 6,484, making 78643 the largest zipcode in Llano and the 2nd largest in Llano County.
There are 3 public schools in 78643 with an average Homefacts rating of A. , and there are 13 registered sex offenders residing in the zip code 78643. Unemployment in 78643 is moderate.