Caitlin is a moderately popular girls' name in England & Wales, ranking #160 in 2015 with 340 recorded births. The name reached its all-time peak in 2003 with 2,277 births ranking #22. Since 1996, the popularity has decreased by 62.5%. In 2015, approximately 1 in every 906 girls born was named Caitlin. FALLING Recent data shows the name is currently falling.