Farmington, MO -- U.S. city in Missouri Population (2000): 13924 Housing Units (2000): 5003 Land area (2000): 8.954391 sq. miles (23.191766 sq. km) Water area (2000): 0.043817 sq. miles (0.113485 sq. km) Total area (2000): 8.998208 sq. miles (23.305251 sq. km) FIPS code: 23752 Located within: Missouri (MO), FIPS 29 Location: 37.781932 N, 90.422145 W ZIP Codes (1990): 63640 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Farmington, MO Farmington