Caitlin is a moderately popular girls' name in England & Wales, ranking #114 in 2013 with 478 recorded births. This places Caitlin in the top 2% of ranked UK girls' names for the year. Its actual usage is classified as Moderately Popular. The name reached its all-time peak in 2003 with 2,277 births ranking #22. Since 1996, the popularity has decreased by 47.2%. In 2013, approximately 1 in every 645 girls born was named Caitlin. FALLING Recent data shows the name is currently falling.