Demetrio is a distinctive boys' name in United States, ranking #1356 in 1999 with 88 recorded births. The name reached its all-time peak in 1999 with 88 births ranking #1356. Since 1996, the popularity has increased by 120.0%. In 1999, approximately 1 in every 21,819 boys born was named Demetrio. FALLING Recent data shows the name is currently falling.