Kaitlyn is a popular girls' name in United States, ranking #100 in 2011 with 2,908 recorded births. The name reached its all-time peak in 2000 with 8,759 births ranking #30. Since 1996, the popularity has decreased by 59.8%. In 2011, approximately 1 in every 605 girls born was named Kaitlyn. FALLING Recent data shows the name is currently falling.