Altenburg, MO -- U.S. city in Missouri Population (2000): 309 Housing Units (2000): 140 Land area (2000): 0.955604 sq. miles (2.475003 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 0.955604 sq. miles (2.475003 sq. km) FIPS code: 00928 Located within: Missouri (MO), FIPS 29 Location: 37.631301 N, 89.581513 W ZIP Codes (1990): Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Altenburg, MO Altenburg