La Rosita, TX -- U.S. Census Designated Place in Texas Population (2000): 1729 Housing Units (2000): 537 Land area (2000): 3.211955 sq. miles (8.318925 sq. km) Water area (2000): 0.008173 sq. miles (0.021167 sq. km) Total area (2000): 3.220128 sq. miles (8.340092 sq. km) FIPS code: 41503 Located within: Texas (TX), FIPS 48 Location: 26.403182 N, 98.925096 W ZIP Codes (1990): Note: some ZIP codes may be omitted esp. for suburbs. Headwords: La Rosita, TX La Rosita