Lyndon, KY -- U.S. city in Kentucky Population (2000): 9369 Housing Units (2000): 4934 Land area (2000): 3.446015 sq. miles (8.925137 sq. km) Water area (2000): 0.003432 sq. miles (0.008888 sq. km) Total area (2000): 3.449447 sq. miles (8.934025 sq. km) FIPS code: 48558 Located within: Kentucky (KY), FIPS 21 Location: 38.264521 N, 85.591223 W ZIP Codes (1990): 40222 40241 40242 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Lyndon, KY Lyndon