Centralia, MO -- U.S. city in Missouri Population (2000): 3774 Housing Units (2000): 1648 Land area (2000): 2.529507 sq. miles (6.551393 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 2.529507 sq. miles (6.551393 sq. km) FIPS code: 12898 Located within: Missouri (MO), FIPS 29 Location: 39.209657 N, 92.136300 W ZIP Codes (1990): 65240 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Centralia, MO Centralia