Roisin is a distinctive girls' name in United States, ranking #5025 in 2017 with 27 recorded births. This places Roisin in the top 27% 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 68.8%. In 2017, approximately 1 in every 63,921 girls born was named Roisin. RISING Recent data shows the name is currently rising.