Kailey is a distinctive girls' name in United States, ranking #685 in 2018 with 427 recorded births. The name reached its all-time peak in 2004 with 1,439 births ranking #228. Since 1996, the popularity has decreased by 41.5%. In 2018, approximately 1 in every 3,982 girls born was named Kailey. FALLING Recent data shows the name is currently falling.