Question: do squibs live as long as wizards?
Answer: 2 Answers. In-canon, there are no known squibs that have lived beyond a normal human lifespan; Angus Buchanan died at the age of 80, Marius Black died age 80(ish). Argus Filch is approximately 60-70 by the events of Deathly Hallows and Arabella Fig is probably around 70.