Sun Valley, TX -- U.S. city in Texas Population (2000): 51 Housing Units (2000): 31 Land area (2000): 0.153609 sq. miles (0.397846 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 0.153609 sq. miles (0.397846 sq. km) FIPS code: 71356 Located within: Texas (TX), FIPS 48 Location: 33.666881 N, 95.427795 W ZIP Codes (1990): Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Sun Valley, TX Sun Valley