Rocio is a distinctive girls' name in United States, ranking #955 in 2006 with 274 recorded births. This places Rocio in the top 5% of ranked US girls' names for the year. Its actual usage is classified as Uncommon. The name reached its all-time peak in 1998 with 343 births ranking #673. Since 1996, the popularity has decreased by 16.2%. In 2006, approximately 1 in every 6,938 girls born was named Rocio. FALLING Recent data shows the name is currently falling.