Flint Hill, MO -- U.S. city in Missouri Population (2000): 379 Housing Units (2000): 138 Land area (2000): 2.489984 sq. miles (6.449028 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 2.489984 sq. miles (6.449028 sq. km) FIPS code: 24688 Located within: Missouri (MO), FIPS 29 Location: 38.859466 N, 90.864454 W ZIP Codes (1990): Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Flint Hill, MO Flint Hill