Blanche Devereaux's age in "The Golden Girls" is about 53 years old when the series began in 1985. This is revealed in the season three episode "Mother's Day," where it is mentioned that Blanche was 17 years old in 1949. Throughout the show, her age ranges approximately from 53 to 60 years old by the series finale. Blanche was portrayed as the youngest of the four Golden Girls, played by Rue McClanahan who was 51 when the series started, close to her character's age.