Kaitlyn is a moderately popular girls' name in England & Wales, ranking #257 in 2000 with 154 recorded births. The name reached its all-time peak in 2006 with 400 births ranking #139. Since 1996, the popularity has increased by 294.9%. In 2000, approximately 1 in every 1,774 girls born was named Kaitlyn. STABLE Recent data shows the name is currently stable.