Roisin is a distinctive girls' name in United States, ranking #5631 in 2002 with 21 recorded births. The name reached its all-time peak in 2025 with 64 births ranking #2716. Since 1996, the popularity has increased by 31.3%. In 2002, approximately 1 in every 85,563 girls born was named Roisin. RISING Recent data shows the name is currently rising.