There’s only one person left on Earth who was alive in the 1800s.   Source

The death of 116-year-old Susannah Mushatt Jones in May 2016 made Emma Morano, born November 29, 1899,  the only person in the world who was alive before 1900. When she was informed of her new title, she was happy to have the honor, but said “My word, I’m as old as the hills.”