Kiley is a distinctive girls' name in United States, ranking #538 in 1998 with 466 recorded births. The name reached its all-time peak in 2008 with 1,089 births ranking #307. Since 1996, the popularity has increased by 16.2%. In 1998, approximately 1 in every 3,792 girls born was named Kiley. STABLE Recent data shows the name is currently stable.