Kaitlyn is a distinctive boys' name in United States, ranking #7202 in 1998 with 8 recorded births. This places Kaitlyn in the bottom 36% 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 increased by 14.3%. In 1998, approximately 1 in every 238,915 boys born was named Kaitlyn. FALLING Recent data shows the name is currently falling.