Amherst, OH -- U.S. city in Ohio Population (2000): 11797 Housing Units (2000): 4603 Land area (2000): 7.166535 sq. miles (18.561239 sq. km) Water area (2000): 0.006490 sq. miles (0.016809 sq. km) Total area (2000): 7.173025 sq. miles (18.578048 sq. km) FIPS code: 01798 Located within: Ohio (OH), FIPS 39 Location: 41.399993 N, 82.226201 W ZIP Codes (1990): Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Amherst, OH Amherst