Roisin is a distinctive girls' name in United States, ranking #5401 in 2005 with 24 recorded births. The name reached its all-time peak in 2025 with 64 births ranking #2716. Since 1996, the popularity has increased by 50.0%. In 2005, approximately 1 in every 76,987 girls born was named Roisin. RISING Recent data shows the name is currently rising.