Demetrio is a distinctive boys' name in United States, ranking #3450 in 2015 with 32 recorded births. The name reached its all-time peak in 1999 with 88 births ranking #1356. Since 1996, the popularity has decreased by 20.0%. In 2015, approximately 1 in every 59,883 boys born was named Demetrio. FALLING Recent data shows the name is currently falling.