Roisin is a distinctive girls' name in United States, ranking #5894 in 2000 with 19 recorded births. The name reached its all-time peak in 2025 with 64 births ranking #2716. Since 1996, the popularity has increased by 18.8%. In 2000, approximately 1 in every 95,577 girls born was named Roisin. RISING Recent data shows the name is currently rising.