Rosalio is a distinctive boys' name in United States, ranking #4577 in 2003 with 18 recorded births. The name reached its all-time peak in 2000 with 27 births ranking #3209. Since 1996, the popularity has decreased by 30.8%. In 2003, approximately 1 in every 109,737 boys born was named Rosalio. STABLE Recent data shows the name is currently stable.