Gates Mills, OH -- U.S. village in Ohio Population (2000): 2493 Housing Units (2000): 974 Land area (2000): 9.093126 sq. miles (23.551086 sq. km) Water area (2000): 0.005027 sq. miles (0.013020 sq. km) Total area (2000): 9.098153 sq. miles (23.564106 sq. km) FIPS code: 29498 Located within: Ohio (OH), FIPS 39 Location: 41.532584 N, 81.410527 W ZIP Codes (1990): 44040 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Gates Mills, OH Gates Mills