Princeton, KY -- U.S. city in Kentucky Population (2000): 6536 Housing Units (2000): 3150 Land area (2000): 9.127163 sq. miles (23.639243 sq. km) Water area (2000): 0.001111 sq. miles (0.002877 sq. km) Total area (2000): 9.128274 sq. miles (23.642120 sq. km) FIPS code: 63138 Located within: Kentucky (KY), FIPS 21 Location: 37.107674 N, 87.882479 W ZIP Codes (1990): 42445 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Princeton, KY Princeton