Katelynn is a distinctive girls' name in United States, ranking #1050 in 2016 with 249 recorded births. The name reached its all-time peak in 1998 with 1,457 births ranking #210. Since 1996, the popularity has decreased by 80.6%. In 2016, approximately 1 in every 7,114 girls born was named Katelynn. STABLE Recent data shows the name is currently stable.