Demetrio is a distinctive boys' name in United States, ranking #2512 in 1998 with 34 recorded births. The name reached its all-time peak in 1999 with 88 births ranking #1356. Since 1996, the popularity has decreased by 15.0%. In 1998, approximately 1 in every 56,215 boys born was named Demetrio. FALLING Recent data shows the name is currently falling.