Maddilyn is a distinctive girls' name in United States, ranking #3107 in 2008 with 55 recorded births. This places Maddilyn in the top 15% of ranked US girls' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2016 with 101 births ranking #1981. Since 1996, the popularity has increased by 816.7%. In 2008, approximately 1 in every 34,377 girls born was named Maddilyn. FALLING Recent data shows the name is currently falling.