Caitlin is a popular girls' name in England & Wales, ranking #86 in 2011 with 708 recorded births. The name reached its all-time peak in 2003 with 2,277 births ranking #22. Since 1996, the popularity has decreased by 21.9%. In 2011, approximately 1 in every 454 girls born was named Caitlin. FALLING Recent data shows the name is currently falling.