Maddilyn is a distinctive girls' name in United States, ranking #2613 in 2020 with 65 recorded births. The name reached its all-time peak in 2016 with 101 births ranking #1981. Since 1996, the popularity has increased by 983.3%. In 2020, approximately 1 in every 24,854 girls born was named Maddilyn. FALLING Recent data shows the name is currently falling.