Caitlin is a popular girls' name in England & Wales, ranking #58 in 2009 with 1,070 recorded births. The name reached its all-time peak in 2003 with 2,277 births ranking #22. Since 1996, the popularity has increased by 18.1%. In 2009, approximately 1 in every 293 girls born was named Caitlin. FALLING Recent data shows the name is currently falling.