Kaylin is a moderately popular girls' name in United States, ranking #436 in 2004 with 699 recorded births. The name reached its all-time peak in 2008 with 869 births ranking #377. Since 1996, the popularity has increased by 40.9%. In 2004, approximately 1 in every 2,627 girls born was named Kaylin. FALLING Recent data shows the name is currently falling.