Kaitlyn is a distinctive boys' name in United States, ranking #12367 in 2005 with 5 recorded births. This places Kaitlyn in the bottom 8% of ranked US boys' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2004 with 35 births ranking #2925. Since 1996, the popularity has decreased by 28.6%. In 2005, approximately 1 in every 399,429 boys born was named Kaitlyn. FALLING Recent data shows the name is currently falling.