Cailen is a distinctive girls' name in United States, ranking #11499 in 2003 with 8 recorded births. The name reached its all-time peak in 2009 with 13 births ranking #8991. Since 1996, the popularity has increased by 33.3%. In 2003, approximately 1 in every 228,381 girls born was named Cailen. STABLE Recent data shows the name is currently stable.