Demetrio is a distinctive boys' name in United States, ranking #3182 in 2011 with 35 recorded births. The name reached its all-time peak in 1999 with 88 births ranking #1356. Since 1996, the popularity has decreased by 12.5%. In 2011, approximately 1 in every 54,257 boys born was named Demetrio. FALLING Recent data shows the name is currently falling.