Maddelyn is a distinctive girls' name in United States, ranking #3598 in 2017 with 43 recorded births. The name reached its all-time peak in 2017 with 43 births ranking #3598. Since 1996, the popularity has increased by 377.8%. In 2017, approximately 1 in every 40,137 girls born was named Maddelyn. STABLE Recent data shows the name is currently stable.