Kaylin is a moderately popular girls' name in United States, ranking #442 in 2003 with 677 recorded births. The name reached its all-time peak in 2008 with 869 births ranking #377. Since 1996, the popularity has increased by 36.5%. In 2003, approximately 1 in every 2,699 girls born was named Kaylin. FALLING Recent data shows the name is currently falling.