Katelyn is a distinctive girls' name in England & Wales, ranking #2278 in 2025 with 12 recorded births. The name reached its all-time peak in 2004 with 263 births ranking #185. Since 1996, the popularity has decreased by 42.9%. In 2025, approximately 1 in every 21,107 girls born was named Katelyn. RISING Recent data shows the name is currently rising.