Rosario is a distinctive boys' name in United States, ranking #5289 in 2021 with 18 recorded births. The name reached its all-time peak in 1999 with 41 births ranking #2257. Since 1996, the popularity has decreased by 51.4%. In 2021, approximately 1 in every 97,124 boys born was named Rosario. FALLING Recent data shows the name is currently falling.