Greenfield, OH -- U.S. city in Ohio Population (2000): 4906 Housing Units (2000): 2099 Land area (2000): 1.934334 sq. miles (5.009901 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 1.934334 sq. miles (5.009901 sq. km) FIPS code: 32088 Located within: Ohio (OH), FIPS 39 Location: 39.351623 N, 83.386461 W ZIP Codes (1990): 45123 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Greenfield, OH Greenfield