Marilyn is a distinctive girls' name in United States, ranking #634 in 2020 with 457 recorded births. The name reached its all-time peak in 2013 with 837 births ranking #373. Since 1996, the popularity has decreased by 25.2%. In 2020, approximately 1 in every 3,535 girls born was named Marilyn. STABLE Recent data shows the name is currently stable.