Kailey is a moderately popular girls' name in United States, ranking #287 in 2007 with 1,178 recorded births. This places Kailey in the top 1% of ranked US girls' names for the year. Its actual usage is classified as Moderately Popular. The name reached its all-time peak in 2004 with 1,439 births ranking #228. Since 1996, the popularity has increased by 61.4%. In 2007, approximately 1 in every 1,632 girls born was named Kailey. FALLING Recent data shows the name is currently falling.