Katilynn is a distinctive girls' name in United States, ranking #12754 in 2011 with 8 recorded births. The name reached its all-time peak in 1999 with 28 births ranking #4144. Since 1996, the popularity has decreased by 65.2%. In 2011, approximately 1 in every 219,851 girls born was named Katilynn. STABLE Recent data shows the name is currently stable.