Katilyn is a distinctive girls' name in United States, ranking #1614 in 1998 with 101 recorded births. The name reached its all-time peak in 1998 with 101 births ranking #1614. Since 1996, the popularity has increased by 50.7%. In 1998, approximately 1 in every 17,494 girls born was named Katilyn. STABLE Recent data shows the name is currently stable.