Kayelyn is a distinctive girls' name in United States, ranking #8025 in 2004 with 14 recorded births. The name reached its all-time peak in 1999 with 14 births ranking #7031. Since 1996, the popularity has increased by 100.0%. In 2004, approximately 1 in every 131,152 girls born was named Kayelyn. RISING Recent data shows the name is currently rising.