Katelyn is a distinctive girls' name in United States, ranking #531 in 2019 with 576 recorded births. The name reached its all-time peak in 2000 with 5,502 births ranking #54. Since 1996, the popularity has decreased by 89.4%. In 2019, approximately 1 in every 2,912 girls born was named Katelyn. FALLING Recent data shows the name is currently falling.