Rosalyn is a distinctive girls' name in United States, ranking #1980 in 2000 with 85 recorded births. The name reached its all-time peak in 2021 with 332 births ranking #832. Since 1996, the popularity has increased by 13.3%. In 2000, approximately 1 in every 21,364 girls born was named Rosalyn. STABLE Recent data shows the name is currently stable.