Efrain is a distinctive boys' name in United States, ranking #665 in 2006 with 342 recorded births. This places Efrain in the top 5% of ranked US boys' names for the year. Its actual usage is classified as Uncommon. The name reached its all-time peak in 1999 with 392 births ranking #529. In 2006, approximately 1 in every 6,009 boys born was named Efrain. FALLING Recent data shows the name is currently falling.