Uncertain, TX -- U.S. city in Texas Population (2000): 150 Housing Units (2000): 137 Land area (2000): 0.509950 sq. miles (1.320765 sq. km) Water area (2000): 0.001216 sq. miles (0.003150 sq. km) Total area (2000): 0.511166 sq. miles (1.323915 sq. km) FIPS code: 74240 Located within: Texas (TX), FIPS 48 Location: 32.710040 N, 94.121893 W ZIP Codes (1990): Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Uncertain, TX Uncertain