Kaetlyn is a distinctive girls' name in United States, ranking #3084 in 1998 with 41 recorded births. The name reached its all-time peak in 1997 with 57 births ranking #2343. Since 1996, the popularity has increased by 32.3%. In 1998, approximately 1 in every 43,095 girls born was named Kaetlyn. FALLING Recent data shows the name is currently falling.