Fort Knox, Kentucky, United States [CDP]; population was 21,495 in 1990; housing units was 4,346 in 1990; location is 37°53'N 85°58'W; land area is 20.94 square miles (13,404 acres); water area is 0.02 square miles (15 acres); FIPS code is 28540 [SourceCBP]
