Marly is a distinctive girls' name in United States, ranking #5179 in 2025 with 25 recorded births. This places Marly in the top 30% of ranked US girls' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2008 with 89 births ranking #2226. In 2025, approximately 1 in every 64,291 girls born was named Marly. STABLE Recent data shows the name is currently stable.