37742 is zip code located in Greenback, Tennessee. The population is 5,968, making 37742 the largest zipcode in Greenback and the 5th largest in Loudon County.
There are 1 public schools in 37742 with an average Homefacts rating of B. , and there are 11 registered sex offenders residing in the zip code 37742. Unemployment in 37742 is moderate.