Meaning and name origin
Demario \d(e)-ma-rio\ as a boy's name is of Spanish, Greek and American origin, and the meaning of Demario is "gentle; calf". Demario is a variant of Damario (Spanish, Greek): masculine form of Damaris. Also a variant of De- (American): combination of the De- prefix with various endings.
Demario is not a popular first name for males but a very popular surname or last name for all people (#26664 out of 88799, Top 30%) (2000 U.S. Census).
Displayed below is the baby name popularity of the name Demario for boys. Demario reached its highest rank of #601 in the U.S. in 1980-1989. (2014 statistics).