Caitlin is a popular girls' name in United States, ranking #93 in 1999 with 3,461 recorded births. The name reached its all-time peak in 1996 with 4,268 births ranking #84. Since 1996, the popularity has decreased by 18.9%. In 1999, approximately 1 in every 513 girls born was named Caitlin. STABLE Recent data shows the name is currently stable.