Demetrio is a distinctive boys' name in United States, ranking #3682 in 2013 with 28 recorded births. The name reached its all-time peak in 1999 with 88 births ranking #1356. Since 1996, the popularity has decreased by 30.0%. In 2013, approximately 1 in every 67,545 boys born was named Demetrio. FALLING Recent data shows the name is currently falling.