Maddilyn is a distinctive girls' name in United States, ranking #5335 in 2025 with 24 recorded births. The name reached its all-time peak in 2016 with 101 births ranking #1981. Since 1996, the popularity has increased by 300.0%. In 2025, approximately 1 in every 66,969 girls born was named Maddilyn. FALLING Recent data shows the name is currently falling.