Demecio is a unique and rare male given name of Latin origin, derived from the Roman family name Demetrius, which means "follower of Demeter" or "dedicated to Demeter," the goddess of harvest and fertility in Greek mythology. This name has been traditionally used within the Roman Catholic Church for saints and martyrs, most notably Saint Demetrios, who was a Christian military leader martyred in the 4th century. Despite its historical roots and cultural significance, Demecio remains relatively uncommon as a given name today.
Demecio had a peak in popularity with five births each in 1929 and 1934. After a gap of four decades, there was another spike with six births in 1988. The name has been consistently used over time with a total of 26 births from 1929 to 1996.