Katilynn is a distinctive girls' name in United States, ranking #6532 in 1998 with 15 recorded births. The name reached its all-time peak in 1999 with 28 births ranking #4144. Since 1996, the popularity has decreased by 34.8%. In 1998, approximately 1 in every 117,793 girls born was named Katilynn. STABLE Recent data shows the name is currently stable.