Kaetlyn is a distinctive girls' name in United States, ranking #5618 in 2009 with 25 recorded births. The name reached its all-time peak in 1997 with 57 births ranking #2343. Since 1996, the popularity has decreased by 19.4%. In 2009, approximately 1 in every 73,475 girls born was named Kaetlyn. FALLING Recent data shows the name is currently falling.