Caitlin is a moderately popular girls' name in United States, ranking #339 in 2010 with 945 recorded births. The name reached its all-time peak in 1996 with 4,268 births ranking #84. Since 1996, the popularity has decreased by 77.9%. In 2010, approximately 1 in every 1,881 girls born was named Caitlin. STABLE Recent data shows the name is currently stable.