Kaetlyn is a distinctive girls' name in United States, ranking #10750 in 2011 with 10 recorded births. The name reached its all-time peak in 1997 with 57 births ranking #2343. Since 1996, the popularity has decreased by 67.7%. In 2011, approximately 1 in every 175,880 girls born was named Kaetlyn. FALLING Recent data shows the name is currently falling.