Kayley is a distinctive girls' name in United States, ranking #669 in 2004 with 411 recorded births. The name reached its all-time peak in 1999 with 461 births ranking #548. Since 1996, the popularity has increased by 60.5%. In 2004, approximately 1 in every 4,467 girls born was named Kayley. FALLING Recent data shows the name is currently falling.