Dylan O'Brien was born on August 26th in 1993. He was born to Lisa Rhodes and Patrick O'Brien. He has one sister named Julia who is only 16 months apart from him. His mother Lisa Rhodes is an Italian, English and Spanish past actres and his father is an american camera operator. He was born and grew up in Springfield Township, Union County, New Jersey. He moved at the age of 13 to Hermosa Beach in California.