Demetrius is a moderately popular boys' name in United States, ranking #491 in 2007 with 541 recorded births. The name reached its all-time peak in 1996 with 759 births ranking #338. Since 1996, the popularity has decreased by 28.7%. In 2007, approximately 1 in every 3,836 boys born was named Demetrius. FALLING Recent data shows the name is currently falling.