Cailen is a distinctive boys' name in United States, ranking #6649 in 2011 with 12 recorded births. This places Cailen in the top 46% of ranked US boys' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2007 with 17 births ranking #5238. Since 1996, the popularity has increased by 71.4%. In 2011, approximately 1 in every 158,249 boys born was named Cailen. RISING Recent data shows the name is currently rising.