Katielynn is a distinctive girls' name in United States, ranking #11460 in 2013 with 9 recorded births. The name reached its all-time peak in 2006 with 20 births ranking #6478. Since 1996, the popularity has increased by 12.5%. In 2013, approximately 1 in every 194,935 girls born was named Katielynn. STABLE Recent data shows the name is currently stable.