Neffs, OH -- U.S. Census Designated Place in Ohio Population (2000): 1138 Housing Units (2000): 483 Land area (2000): 4.010425 sq. miles (10.386952 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 4.010425 sq. miles (10.386952 sq. km) FIPS code: 53788 Located within: Ohio (OH), FIPS 39 Location: 40.028736 N, 80.815811 W ZIP Codes (1990): Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Neffs, OH Neffs