Roisin is a distinctive girls' name in United States, ranking #5509 in 2011 with 25 recorded births. This places Roisin in the top 28% of ranked US girls' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2025 with 64 births ranking #2716. Since 1996, the popularity has increased by 56.3%. In 2011, approximately 1 in every 70,352 girls born was named Roisin. RISING Recent data shows the name is currently rising.