Hallsville, MO -- U.S. city in Missouri Population (2000): 978 Housing Units (2000): 439 Land area (2000): 0.733011 sq. miles (1.898490 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 0.733011 sq. miles (1.898490 sq. km) FIPS code: 29998 Located within: Missouri (MO), FIPS 29 Location: 39.116956 N, 92.220571 W ZIP Codes (1990): 65255 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Hallsville, MO Hallsville