Dayton, KY -- U.S. city in Kentucky Population (2000): 5966 Housing Units (2000): 2401 Land area (2000): 1.327339 sq. miles (3.437792 sq. km) Water area (2000): 0.337565 sq. miles (0.874289 sq. km) Total area (2000): 1.664904 sq. miles (4.312081 sq. km) FIPS code: 20350 Located within: Kentucky (KY), FIPS 21 Location: 39.111781 N, 84.470401 W ZIP Codes (1990): 41074 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Dayton, KY Dayton