Demetrius is a moderately popular boys' name in United States, ranking #437 in 2004 with 593 recorded births. The name reached its all-time peak in 1996 with 759 births ranking #338. Since 1996, the popularity has decreased by 21.9%. In 2004, approximately 1 in every 3,347 boys born was named Demetrius. FALLING Recent data shows the name is currently falling.