Routh attended Norwalk High School, where he played sports, and participated in music and theatre. He attended this school at the same time as Jason Momoa, who would also later become an actor in film adaptations of DC comics. He has described himself as a "momma's boy" and not "the most popular kid" during his school years. Routh has also noted that during his younger years, he was fond of the Superman films and comic books.
