Rolling Hills, WY -- U.S. town in Wyoming Population (2000): 449 Housing Units (2000): 143 Land area (2000): 0.708265 sq. miles (1.834398 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 0.708265 sq. miles (1.834398 sq. km) FIPS code: 67440 Located within: Wyoming (WY), FIPS 56 Location: 42.907620 N, 105.841515 W ZIP Codes (1990): Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Rolling Hills, WY Rolling Hills