Cailen is a distinctive boys' name in United States, ranking #6365 in 2012 with 13 recorded births. The name reached its all-time peak in 2007 with 17 births ranking #5238. Since 1996, the popularity has increased by 85.7%. In 2012, approximately 1 in every 145,894 boys born was named Cailen. RISING Recent data shows the name is currently rising.