Katilynn is a distinctive girls' name in United States, ranking #13717 in 2015 with 7 recorded births. The name reached its all-time peak in 1999 with 28 births ranking #4144. Since 1996, the popularity has decreased by 69.6%. In 2015, approximately 1 in every 254,951 girls born was named Katilynn. STABLE Recent data shows the name is currently stable.