Kayley is a distinctive girls' name in United States, ranking #555 in 1998 with 446 recorded births. The name reached its all-time peak in 1999 with 461 births ranking #548. Since 1996, the popularity has increased by 74.2%. In 1998, approximately 1 in every 3,962 girls born was named Kayley. FALLING Recent data shows the name is currently falling.