Demetrio is a distinctive boys' name in United States, ranking #4971 in 2018 with 19 recorded births. The name reached its all-time peak in 1999 with 88 births ranking #1356. Since 1996, the popularity has decreased by 52.5%. In 2018, approximately 1 in every 95,551 boys born was named Demetrio. FALLING Recent data shows the name is currently falling.