Marly is a distinctive girls' name in United States, ranking #3822 in 2015 with 40 recorded births. The name reached its all-time peak in 2008 with 89 births ranking #2226. Since 1996, the popularity has increased by 53.8%. In 2015, approximately 1 in every 44,616 girls born was named Marly. STABLE Recent data shows the name is currently stable.