Cailen is a distinctive girls' name in United States, ranking #9392 in 1998 with 9 recorded births. The name reached its all-time peak in 2009 with 13 births ranking #8991. Since 1996, the popularity has increased by 50.0%. In 1998, approximately 1 in every 196,321 girls born was named Cailen. STABLE Recent data shows the name is currently stable.