Rosalyn is a distinctive girls' name in United States, ranking #901 in 2017 with 298 recorded births. The name reached its all-time peak in 2021 with 332 births ranking #832. Since 1996, the popularity has increased by 297.3%. In 2017, approximately 1 in every 5,792 girls born was named Rosalyn. STABLE Recent data shows the name is currently stable.