Kayleigh is a moderately popular girls' name in United States, ranking #363 in 1999 with 818 recorded births. The name reached its all-time peak in 2009 with 1,449 births ranking #227. Since 1996, the popularity has increased by 29.2%. In 1999, approximately 1 in every 2,168 girls born was named Kayleigh. FALLING Recent data shows the name is currently falling.