Kayley is a distinctive girls' name in United States, ranking #929 in 2009 with 288 recorded births. This places Kayley in the top 5% 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 12.5%. In 2009, approximately 1 in every 6,378 girls born was named Kayley. FALLING Recent data shows the name is currently falling.