Kayley is a distinctive girls' name in United States, ranking #821 in 2008 with 349 recorded births. This places Kayley in the top 4% of ranked US girls' names for the year. Its actual usage is classified as Uncommon. The name reached its all-time peak in 1999 with 461 births ranking #548. Since 1996, the popularity has increased by 36.3%. In 2008, approximately 1 in every 5,418 girls born was named Kayley. FALLING Recent data shows the name is currently falling.