Rosalyn is a distinctive girls' name in United States, ranking #1404 in 2012 with 165 recorded births. The name reached its all-time peak in 2021 with 332 births ranking #832. Since 1996, the popularity has increased by 120.0%. In 2012, approximately 1 in every 10,671 girls born was named Rosalyn. STABLE Recent data shows the name is currently stable.