Kaitlyn is a moderately popular girls' name in England & Wales, ranking #150 in 2008 with 359 recorded births. The name reached its all-time peak in 2006 with 400 births ranking #139. Since 1996, the popularity has increased by 820.5%. In 2008, approximately 1 in every 880 girls born was named Kaitlyn. STABLE Recent data shows the name is currently stable.