Caldwell, OH -- U.S. village in Ohio Population (2000): 1956 Housing Units (2000): 887 Land area (2000): 0.978875 sq. miles (2.535275 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 0.978875 sq. miles (2.535275 sq. km) FIPS code: 10940 Located within: Ohio (OH), FIPS 39 Location: 39.747404 N, 81.516156 W ZIP Codes (1990): 43724 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Caldwell, OH Caldwell