Kaitlyn is a distinctive boys' name in United States, ranking #8656 in 2008 with 9 recorded births. The name reached its all-time peak in 2004 with 35 births ranking #2925. Since 1996, the popularity has increased by 28.6%. In 2008, approximately 1 in every 226,661 boys born was named Kaitlyn. FALLING Recent data shows the name is currently falling.