Kaitlyn is a highly popular girls' name in United States, ranking #32 in 2002 with 7,981 recorded births. The name reached its all-time peak in 2000 with 8,759 births ranking #30. Since 1996, the popularity has increased by 10.2%. In 2002, approximately 1 in every 225 girls born was named Kaitlyn. FALLING Recent data shows the name is currently falling.