Rosalyn is a distinctive girls' name in United States, ranking #1848 in 2001 with 96 recorded births. The name reached its all-time peak in 2021 with 332 births ranking #832. Since 1996, the popularity has increased by 28.0%. In 2001, approximately 1 in every 18,756 girls born was named Rosalyn. STABLE Recent data shows the name is currently stable.