Maddelyn is a distinctive girls' name in United States, ranking #7076 in 1999 with 14 recorded births. The name reached its all-time peak in 2017 with 43 births ranking #3598. Since 1996, the popularity has increased by 55.6%. In 1999, approximately 1 in every 126,699 girls born was named Maddelyn. STABLE Recent data shows the name is currently stable.