Demetrus is a distinctive boys' name in United States, ranking #7016 in 1998 with 8 recorded births. The name reached its all-time peak in 1996 with 20 births ranking #3435. Since 1996, the popularity has decreased by 60.0%. In 1998, approximately 1 in every 238,915 boys born was named Demetrus. FALLING Recent data shows the name is currently falling.