Fairfield, KY -- U.S. city in Kentucky Population (2000): 72 Housing Units (2000): 32 Land area (2000): 0.290008 sq. miles (0.751118 sq. km) Water area (2000): 0.007086 sq. miles (0.018352 sq. km) Total area (2000): 0.297094 sq. miles (0.769470 sq. km) FIPS code: 26020 Located within: Kentucky (KY), FIPS 21 Location: 37.932437 N, 85.381935 W ZIP Codes (1990): Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Fairfield, KY Fairfield