Caitlin is a highly popular girls' name in England & Wales, ranking #24 in 2000 with 2,086 recorded births. The name reached its all-time peak in 2003 with 2,277 births ranking #22. Since 1996, the popularity has increased by 130.2%. In 2000, approximately 1 in every 131 girls born was named Caitlin. FALLING Recent data shows the name is currently falling.