Clarksburg, MO -- U.S. city in Missouri Population (2000): 375 Housing Units (2000): 157 Land area (2000): 0.577040 sq. miles (1.494526 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 0.577040 sq. miles (1.494526 sq. km) FIPS code: 14140 Located within: Missouri (MO), FIPS 29 Location: 38.659954 N, 92.667454 W ZIP Codes (1990): 65025 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Clarksburg, MO Clarksburg