Rosalyn is a distinctive girls' name in United States, ranking #1665 in 2004 with 117 recorded births. This places Rosalyn in the top 9% of ranked US girls' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2021 with 332 births ranking #832. Since 1996, the popularity has increased by 56.0%. In 2004, approximately 1 in every 15,693 girls born was named Rosalyn. STABLE Recent data shows the name is currently stable.