Kaitlyn is a moderately popular girls' name in England & Wales, ranking #152 in 2010 with 345 recorded births. The name reached its all-time peak in 2006 with 400 births ranking #139. Since 1996, the popularity has increased by 784.6%. In 2010, approximately 1 in every 931 girls born was named Kaitlyn. STABLE Recent data shows the name is currently stable.