Katelynn is a distinctive girls' name in United States, ranking #1470 in 2020 with 146 recorded births. The name reached its all-time peak in 1998 with 1,457 births ranking #210. Since 1996, the popularity has decreased by 88.6%. In 2020, approximately 1 in every 11,065 girls born was named Katelynn. STABLE Recent data shows the name is currently stable.