Caitlan is a moderately popular girls' name in England & Wales, ranking #411 in 2000 with 77 recorded births. The name reached its all-time peak in 1999 with 92 births ranking #349. Since 1996, the popularity has increased by 305.3%. In 2000, approximately 1 in every 3,548 girls born was named Caitlan. FALLING Recent data shows the name is currently falling.