Zip Area Code

Fort Knox, Kentucky

Fort Knox, Kentucky, in Hardin County, has ZIP codes 40121 and 40122 and area code 270, with 364 as an overlay.

ZIP codes
40121, 40122
Area codes
270, 364
Coordinates
37.8920, -85.9562

ZIP codes in Fort Knox

ZIP codePost officeCountyArea codes
40121Fort KnoxHardin County270, 364
40122*Fort KnoxHardin County270, 364

* No mapped delivery area: P.O. boxes or a single organization. Area codes are those of the nearest ZIP code area.

Area codes for Fort Knox

  • Area code 270

    In service since April 19, 1999. Shares its area with 364. Local calls are dialed with ten digits; dialing 1 plus ten digits also works.

  • Area code 364

    In service since March 3, 2014. Shares its area with 270. Local calls are dialed with ten digits; dialing 1 plus ten digits also works.

Area codes here are matched from telephone rate centers, so a place near a boundary can have local numbers from either side of it.

Towns near Fort Knox