Rosario is a distinctive boys' name in United States, ranking #5602 in 2013 with 16 recorded births. This places Rosario in the top 40% of ranked US boys' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 1999 with 41 births ranking #2257. Since 1996, the popularity has decreased by 56.8%. In 2013, approximately 1 in every 118,203 boys born was named Rosario. FALLING Recent data shows the name is currently falling.