Maddelyn is a distinctive girls' name in United States, ranking #3884 in 2012 with 40 recorded births. The name reached its all-time peak in 2017 with 43 births ranking #3598. Since 1996, the popularity has increased by 344.4%. In 2012, approximately 1 in every 44,019 girls born was named Maddelyn. STABLE Recent data shows the name is currently stable.