Efstathios is a distinctive boys' name in United States, ranking #9946 in 2003 with 6 recorded births. This places Efstathios in the bottom 22% 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 2003, approximately 1 in every 329,212 boys born was named Efstathios. FALLING Recent data shows the name is currently falling.