Maddilyn is a distinctive girls' name in United States, ranking #2264 in 2019 with 81 recorded births. The name reached its all-time peak in 2016 with 101 births ranking #1981. Since 1996, the popularity has increased by 1,250.0%. In 2019, approximately 1 in every 20,711 girls born was named Maddilyn. FALLING Recent data shows the name is currently falling.