Demetrio is a distinctive boys' name in United States, ranking #2441 in 2003 with 43 recorded births. This places Demetrio in the top 19% of ranked US boys' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 1999 with 88 births ranking #1356. In 2003, approximately 1 in every 45,936 boys born was named Demetrio. FALLING Recent data shows the name is currently falling.