Rocio is a distinctive boys' name in United States, ranking #8942 in 2000 with 7 recorded births. This places Rocio in the bottom 26% of ranked US boys' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 1997 with 12 births ranking #5207. Since 1996, the popularity has decreased by 36.4%. In 2000, approximately 1 in every 280,562 boys born was named Rocio. STABLE Recent data shows the name is currently stable.