Cailen is a distinctive girls' name in United States, ranking #12076 in 1996 with 6 recorded births. This places Cailen in the bottom 24% of ranked US girls' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2009 with 13 births ranking #8991. In 1996, approximately 1 in every 292,160 girls born was named Cailen. STABLE Recent data shows the name is currently stable.