Demetrius is a distinctive boys' name in United States, ranking #856 in 2020 with 266 recorded births. The name reached its all-time peak in 1996 with 759 births ranking #338. Since 1996, the popularity has decreased by 65.0%. In 2020, approximately 1 in every 6,485 boys born was named Demetrius. FALLING Recent data shows the name is currently falling.