Kayley is a distinctive girls' name in United States, ranking #1080 in 2010 with 231 recorded births. This places Kayley in the top 5% of ranked US girls' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 1999 with 461 births ranking #548. In 2010, approximately 1 in every 7,694 girls born was named Kayley. FALLING Recent data shows the name is currently falling.