Kaitlyn is a moderately popular girls' name in England & Wales, ranking #160 in 2007 with 342 recorded births. The name reached its all-time peak in 2006 with 400 births ranking #139. Since 1996, the popularity has increased by 776.9%. In 2007, approximately 1 in every 895 girls born was named Kaitlyn. STABLE Recent data shows the name is currently stable.