American supercentenarians are citizens or residents of the United States who have reached or passed 110 years of age. , the Gerontology Research Group (GRG) had validated the length of life claims of 782 American supercentenarians. As of , the GRG lists the oldest living American as Hester Ford (born in Lancaster, South Carolina, August 15, 1905), aged . The longest-lived person ever from the United States was Sarah Knauss, of Hollywood, Pennsylvania, who died on December 30, 1999, aged 119 years, 97 days.