Kaetlyn is a distinctive girls' name in United States, ranking #7237 in 2007 with 18 recorded births. The name reached its all-time peak in 1997 with 57 births ranking #2343. Since 1996, the popularity has decreased by 41.9%. In 2007, approximately 1 in every 106,803 girls born was named Kaetlyn. FALLING Recent data shows the name is currently falling.