King Ranch is the largest ranch in the United States. At some 825,000 acres (3,340 km2; 1,289 sq mi) it is larger than the state of Rhode Island and country of Luxembourg. It is mainly a cattle ranch, but also produced the Triple Crown winning racehorse Assault. The ranch is located in South Texas between Corpus Christi and Brownsville adjacent to Kingsville. It was founded in 1853 by Captain Richard King and Gideon K. Lewis. It includes portions of six Texas counties; most of Kleberg and much of Kenedy, with portions extending into Brooks, Jim Wells, Nueces, and Willacy counties.