Demetrio is a distinctive boys' name in United States, ranking #2377 in 2005 with 49 recorded births. This places Demetrio in the top 18% 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. Since 1996, the popularity has increased by 22.5%. In 2005, approximately 1 in every 40,758 boys born was named Demetrio. FALLING Recent data shows the name is currently falling.