Rosalyn is a distinctive girls' name in United States, ranking #987 in 2014 with 271 recorded births. The name reached its all-time peak in 2021 with 332 births ranking #832. Since 1996, the popularity has increased by 261.3%. In 2014, approximately 1 in every 6,590 girls born was named Rosalyn. STABLE Recent data shows the name is currently stable.