Cailen is a distinctive girls' name in United States, ranking #8654 in 2000 with 11 recorded births. The name reached its all-time peak in 2009 with 13 births ranking #8991. Since 1996, the popularity has increased by 83.3%. In 2000, approximately 1 in every 165,088 girls born was named Cailen. STABLE Recent data shows the name is currently stable.