Caitlin is a popular girls' name in England & Wales, ranking #66 in 1996 with 906 recorded births. This places Caitlin in the top 1% of ranked UK girls' names for the year. Its actual usage is classified as Popular. The name reached its all-time peak in 2003 with 2,277 births ranking #22. In 1996, approximately 1 in every 327 girls born was named Caitlin. FALLING Recent data shows the name is currently falling.