Cox isn't married yet but he is currently in a relationship with his long-time girlfriend Samantha Thomas. They have been dating each other since long but aren't married yet. His girlfriend is a producer, known for her work as a producer in "Agents of S.H.I.E.L.D." and "Jessica Jones". The couple is blessed with one child who was born in 2016. They live together along with their child and they have a plan to get married soon in future. Before Samantha Thomas, he was in a relationship with Lynn Collins (2004), Kate Mara (2008-2009) and Jonet Montgomery (2014).
Cox made his debut in acting from the role of Thorn in the movie named "Stardust", which was released in 2007. After then he played roles in many movie and television shows. He has been famous for his role as Matt Murdock in Marvel’s "Daredevil" TV series, by Netflix. He has been currently working on the show and its third season will be aired from 2018 and he has the role of the blind lawyer who fights crime and he has displayed a charming body, but he never revealed of his gym.
Cox has played roles in various movies and television shows and he has been able to earn a good sum from his acting career. His recent net worth is estimated to be around $2 million.