Opal, WY -- U.S. town in Wyoming Population (2000): 102 Housing Units (2000): 48 Land area (2000): 0.430749 sq. miles (1.115636 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 0.430749 sq. miles (1.115636 sq. km) FIPS code: 57810 Located within: Wyoming (WY), FIPS 56 Location: 41.770449 N, 110.325918 W ZIP Codes (1990): Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Opal, WY Opal