Kaitlyn is a moderately popular girls' name in England & Wales, ranking #258 in 2001 with 152 recorded births. The name reached its all-time peak in 2006 with 400 births ranking #139. Since 1996, the popularity has increased by 289.7%. In 2001, approximately 1 in every 1,763 girls born was named Kaitlyn. STABLE Recent data shows the name is currently stable.