Rosalyn is a distinctive girls' name in United States, ranking #1867 in 2007 with 113 recorded births. The name reached its all-time peak in 2021 with 332 births ranking #832. Since 1996, the popularity has increased by 50.7%. In 2007, approximately 1 in every 17,013 girls born was named Rosalyn. STABLE Recent data shows the name is currently stable.