Madlyn is a distinctive girls' name in United States, ranking #5481 in 2006 with 25 recorded births. The name reached its all-time peak in 2005 with 32 births ranking #4326. Since 1996, the popularity has increased by 66.7%. In 2006, approximately 1 in every 76,043 girls born was named Madlyn. FALLING Recent data shows the name is currently falling.