Demetrius is a moderately popular boys' name in United States, ranking #421 in 2002 with 584 recorded births. The name reached its all-time peak in 1996 with 759 births ranking #338. Since 1996, the popularity has decreased by 23.1%. In 2002, approximately 1 in every 3,324 boys born was named Demetrius. FALLING Recent data shows the name is currently falling.