Marilyn is a moderately popular girls' name in United States, ranking #373 in 2013 with 837 recorded births. The name reached its all-time peak in 2013 with 837 births ranking #373. Since 1996, the popularity has increased by 37.0%. In 2013, approximately 1 in every 2,096 girls born was named Marilyn. STABLE Recent data shows the name is currently stable.