Huntsville, TX -- U.S. city in Texas Population (2000): 35078 Housing Units (2000): 11508 Land area (2000): 30.903538 sq. miles (80.039793 sq. km) Water area (2000): 0.340628 sq. miles (0.882222 sq. km) Total area (2000): 31.244166 sq. miles (80.922015 sq. km) FIPS code: 35528 Located within: Texas (TX), FIPS 48 Location: 30.711254 N, 95.548373 W ZIP Codes (1990): 77340 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Huntsville, TX Huntsville