Demetrios is a distinctive boys' name in United States, ranking #5669 in 2025 with 16 recorded births. The name reached its all-time peak in 2002 with 57 births ranking #1952. Since 1996, the popularity has decreased by 59.0%. In 2025, approximately 1 in every 106,755 boys born was named Demetrios. RISING Recent data shows the name is currently rising.