Meaning and name origin
Maddox \m(ad)-dox\ as a boy's name is of Anglo Welsh origin, and the meaning of Maddox is "benefactor's son". From "Maddock's son".
Maddox is not a popular first name for males but a very popular surname or last name for all people (#752 out of 88799, Top 1%) (2000 U.S. Census).
Displayed below is the baby name popularity of the name Maddox for boys. Maddox reached its highest rank of #163 in the U.S. in 2014. (2014 statistics).