Madlyn is a distinctive girls' name in United States, ranking #6233 in 2007 with 22 recorded births. The name reached its all-time peak in 2005 with 32 births ranking #4326. Since 1996, the popularity has increased by 46.7%. In 2007, approximately 1 in every 87,384 girls born was named Madlyn. FALLING Recent data shows the name is currently falling.