american supercentenarians are citizens or residents of the united states who have attained or surpassed 110 years of age. , the gerontology research group (grg) had validated the longevity 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.