Rosalyn is a distinctive girls' name in United States, ranking #1232 in 2013 with 196 recorded births. The name reached its all-time peak in 2021 with 332 births ranking #832. Since 1996, the popularity has increased by 161.3%. In 2013, approximately 1 in every 8,951 girls born was named Rosalyn. STABLE Recent data shows the name is currently stable.