Rosio is a distinctive girls' name in United States, ranking #4353 in 2009 with 35 recorded births. The name reached its all-time peak in 1996 with 64 births ranking #2144. Since 1996, the popularity has decreased by 45.3%. In 2009, approximately 1 in every 52,482 girls born was named Rosio. STABLE Recent data shows the name is currently stable.