Atascosa -- U.S. County in Texas Population (2000): 38628 Housing Units (2000): 14883 Land area (2000): 1232.120253 sq. miles (3191.176671 sq. km) Water area (2000): 3.494225 sq. miles (9.050001 sq. km) Total area (2000): 1235.614478 sq. miles (3200.226672 sq. km) Located within: Texas (TX), FIPS 48 Location: 28.927933 N, 98.529375 W Headwords: Atascosa Atascosa, TX Atascosa County Atascosa County, TX