Demetrius is a distinctive boys' name in United States, ranking #520 in 2008 with 523 recorded births. The name reached its all-time peak in 1996 with 759 births ranking #338. Since 1996, the popularity has decreased by 31.1%. In 2008, approximately 1 in every 3,900 boys born was named Demetrius. FALLING Recent data shows the name is currently falling.