Amherst, TX -- U.S. city in Texas Population (2000): 791 Housing Units (2000): 341 Land area (2000): 0.831389 sq. miles (2.153287 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 0.831389 sq. miles (2.153287 sq. km) FIPS code: 03084 Located within: Texas (TX), FIPS 48 Location: 34.012515 N, 102.414424 W ZIP Codes (1990): 79312 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Amherst, TX Amherst