Demetrio is a distinctive boys' name in United States, ranking #2511 in 2007 with 50 recorded births. The name reached its all-time peak in 1999 with 88 births ranking #1356. Since 1996, the popularity has increased by 25.0%. In 2007, approximately 1 in every 41,505 boys born was named Demetrio. FALLING Recent data shows the name is currently falling.