Rosalyn is a distinctive girls' name in United States, ranking #1764 in 1997 with 86 recorded births. The name reached its all-time peak in 2021 with 332 births ranking #832. Since 1996, the popularity has increased by 14.7%. In 1997, approximately 1 in every 20,240 girls born was named Rosalyn. STABLE Recent data shows the name is currently stable.