Kayly is a distinctive girls' name in United States, ranking #7781 in 1998 with 12 recorded births. The name reached its all-time peak in 2004 with 32 births ranking #4332. Since 1996, the popularity has increased by 50.0%. In 1998, approximately 1 in every 147,241 girls born was named Kayly. RISING Recent data shows the name is currently rising.