Cailen is a distinctive girls' name in United States, ranking #8282 in 2001 with 12 recorded births. The name reached its all-time peak in 2009 with 13 births ranking #8991. Since 1996, the popularity has increased by 100.0%. In 2001, approximately 1 in every 150,047 girls born was named Cailen. STABLE Recent data shows the name is currently stable.