Kayelyn is a distinctive girls' name in United States, ranking #10836 in 2012 with 10 recorded births. The name reached its all-time peak in 1999 with 14 births ranking #7031. Since 1996, the popularity has increased by 42.9%. In 2012, approximately 1 in every 176,074 girls born was named Kayelyn. RISING Recent data shows the name is currently rising.