Rosario is a distinctive boys' name in United States, ranking #3392 in 2001 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 2001, approximately 1 in every 74,724 boys born was named Rosario. FALLING Recent data shows the name is currently falling.