Kaitlyn is a highly popular girls' name in United States, ranking #41 in 2006 with 6,074 recorded births. The name reached its all-time peak in 2000 with 8,759 births ranking #30. Since 1996, the popularity has decreased by 16.1%. In 2006, approximately 1 in every 313 girls born was named Kaitlyn. FALLING Recent data shows the name is currently falling.