Katelynn is a distinctive girls' name in United States, ranking #1277 in 2019 with 182 recorded births. The name reached its all-time peak in 1998 with 1,457 births ranking #210. Since 1996, the popularity has decreased by 85.8%. In 2019, approximately 1 in every 9,217 girls born was named Katelynn. STABLE Recent data shows the name is currently stable.