Demetrio is a distinctive boys' name in United States, ranking #2136 in 2004 with 55 recorded births. The name reached its all-time peak in 1999 with 88 births ranking #1356. Since 1996, the popularity has increased by 37.5%. In 2004, approximately 1 in every 36,087 boys born was named Demetrio. FALLING Recent data shows the name is currently falling.