Cailean is a distinctive girls' name in United States, ranking #13894 in 2002 with 6 recorded births. This places Cailean in the bottom 23% of ranked US girls' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2002 with 6 births ranking #13894. In 2002, approximately 1 in every 299,470 girls born was named Cailean. STABLE Recent data shows the name is currently stable.