Cailean is a distinctive boys' name in United States, ranking #11715 in 2005 with 5 recorded births. The name reached its all-time peak in 1996 with 9 births ranking #6052. Since 1996, the popularity has decreased by 44.4%. In 2005, approximately 1 in every 399,429 boys born was named Cailean. STABLE Recent data shows the name is currently stable.