Demetrius is a distinctive boys' name in United States, ranking #1229 in 2025 with 164 recorded births. The name reached its all-time peak in 1996 with 759 births ranking #338. Since 1996, the popularity has decreased by 78.4%. In 2025, approximately 1 in every 10,415 boys born was named Demetrius. FALLING Recent data shows the name is currently falling.