Madlyn is a distinctive girls' name in United States, ranking #7393 in 2010 with 17 recorded births. The name reached its all-time peak in 2005 with 32 births ranking #4326. Since 1996, the popularity has increased by 13.3%. In 2010, approximately 1 in every 104,549 girls born was named Madlyn. FALLING Recent data shows the name is currently falling.