Demetrio is a distinctive boys' name in United States, ranking #4367 in 2019 with 23 recorded births. The name reached its all-time peak in 1999 with 88 births ranking #1356. Since 1996, the popularity has decreased by 42.5%. In 2019, approximately 1 in every 77,972 boys born was named Demetrio. FALLING Recent data shows the name is currently falling.