Kaitlyn is a distinctive boys' name in United States, ranking #2925 in 2004 with 35 recorded births. The name reached its all-time peak in 2004 with 35 births ranking #2925. Since 1996, the popularity has increased by 400.0%. In 2004, approximately 1 in every 56,709 boys born was named Kaitlyn. FALLING Recent data shows the name is currently falling.