Marly is a distinctive girls' name in United States, ranking #3566 in 2000 with 37 recorded births. The name reached its all-time peak in 2008 with 89 births ranking #2226. Since 1996, the popularity has increased by 42.3%. In 2000, approximately 1 in every 49,080 girls born was named Marly. STABLE Recent data shows the name is currently stable.