Katelynn is a distinctive girls' name in United States, ranking #1933 in 2021 with 102 recorded births. The name reached its all-time peak in 1998 with 1,457 births ranking #210. Since 1996, the popularity has decreased by 92.1%. In 2021, approximately 1 in every 16,076 girls born was named Katelynn. STABLE Recent data shows the name is currently stable.