Rosario is a distinctive boys' name in United States, ranking #4083 in 2017 with 26 recorded births. The name reached its all-time peak in 1999 with 41 births ranking #2257. Since 1996, the popularity has decreased by 29.7%. In 2017, approximately 1 in every 71,166 boys born was named Rosario. FALLING Recent data shows the name is currently falling.