Hidalgo -- U.S. County in Texas Population (2000): 569463 Housing Units (2000): 192658 Land area (2000): 1569.746365 sq. miles (4065.624249 sq. km) Water area (2000): 12.917617 sq. miles (33.456472 sq. km) Total area (2000): 1582.663982 sq. miles (4099.080721 sq. km) Located within: Texas (TX), FIPS 48 Location: 26.242291 N, 98.159799 W Headwords: Hidalgo Hidalgo, TX Hidalgo County Hidalgo County, TX