Kayelyn is a distinctive girls' name in United States, ranking #10122 in 2010 with 11 recorded births. The name reached its all-time peak in 1999 with 14 births ranking #7031. Since 1996, the popularity has increased by 57.1%. In 2010, approximately 1 in every 161,575 girls born was named Kayelyn. RISING Recent data shows the name is currently rising.