Edison's health gradually declined in his later years due to diabetes and other ailments. He remained active in his work as much as possible, but his physical limitations increased.

Thomas Alva Edison died at his home, Glenmont, in West Orange, New Jersey, at the age of 84. He was surrounded by his family.

Edison's funeral was held in West Orange, and he was buried at Rosedale Cemetery in Orange, New Jersey. His death marked the end of an era and the loss of one of America's most celebrated inventors.