Millie Bobby Brown Age, Birthday, Salary, Wiki. Birth Name: Millie Bobby Brown; Birthday: February 19, 2004; How Old : Age: 13 years old; Place of Birth: Malaga, Andalusia, Spain; Zodiac Sign: Pisces; How Tall : Height: 5ft 2in (158 cm) Occupation: Actress, Model; Years Active: 2013-present; Net Worth & Salary: US $3 Million; Marriage(s): Death-O-Meter: Alive