Kaetlyn is a distinctive girls' name in United States, ranking #5806 in 2000 with 19 recorded births. This places Kaetlyn in the top 33% of ranked US girls' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 1997 with 57 births ranking #2343. Since 1996, the popularity has decreased by 38.7%. In 2000, approximately 1 in every 95,577 girls born was named Kaetlyn. FALLING Recent data shows the name is currently falling.