Rosalyn is a distinctive girls' name in United States, ranking #1617 in 2008 with 141 recorded births. The name reached its all-time peak in 2021 with 332 births ranking #832. Since 1996, the popularity has increased by 88.0%. In 2008, approximately 1 in every 13,409 girls born was named Rosalyn. STABLE Recent data shows the name is currently stable.