Kayley is a distinctive girls' name in United States, ranking #638 in 2005 with 438 recorded births. The name reached its all-time peak in 1999 with 461 births ranking #548. Since 1996, the popularity has increased by 71.1%. In 2005, approximately 1 in every 4,218 girls born was named Kayley. FALLING Recent data shows the name is currently falling.