Rosalyn is a distinctive girls' name in United States, ranking #1431 in 2011 with 159 recorded births. The name reached its all-time peak in 2021 with 332 births ranking #832. Since 1996, the popularity has increased by 112.0%. In 2011, approximately 1 in every 11,062 girls born was named Rosalyn. STABLE Recent data shows the name is currently stable.