40121 is zip code located in Fort Knox, Kentucky. The population is 10,946, making 40121 the largest zipcode in Fort Knox and the 4th largest in Hardin County.
There are 9 public schools in 40121 with an average Homefacts rating of NA. , and there are 0 registered sex offenders residing in the zip code 40121. Unemployment in 40121 is moderate.
Zip codes within Fort Knox include 40122.