Maddelyn is a distinctive girls' name in United States, ranking #3956 in 2015 with 38 recorded births. The name reached its all-time peak in 2017 with 43 births ranking #3598. Since 1996, the popularity has increased by 322.2%. In 2015, approximately 1 in every 46,965 girls born was named Maddelyn. STABLE Recent data shows the name is currently stable.