Efstathios is a distinctive boys' name in United States, ranking #8947 in 2006 with 8 recorded births. This places Efstathios in the bottom 36% of ranked US boys' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 1999 with 8 births ranking #7361. In 2006, approximately 1 in every 256,890 boys born was named Efstathios. FALLING Recent data shows the name is currently falling.