Zailen is a distinctive boys' name in United States, ranking #7680 in 2009 with 11 recorded births. This places Zailen in the bottom 47% of ranked US boys' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2011 with 15 births ranking #5937. In 2009, approximately 1 in every 180,300 boys born was named Zailen. FALLING Recent data shows the name is currently falling.