Kaitlynn is a moderately popular girls' name in United States, ranking #361 in 1999 with 822 recorded births. The name reached its all-time peak in 1999 with 822 births ranking #361. Since 1996, the popularity has increased by 10.3%. In 1999, approximately 1 in every 2,158 girls born was named Kaitlynn. STABLE Recent data shows the name is currently stable.