Kayleigh is a moderately popular girls' name in United States, ranking #349 in 2000 with 885 recorded births. The name reached its all-time peak in 2009 with 1,449 births ranking #227. Since 1996, the popularity has increased by 39.8%. In 2000, approximately 1 in every 2,052 girls born was named Kayleigh. FALLING Recent data shows the name is currently falling.