Rocio is a distinctive girls' name in United States, ranking #1678 in 2011 with 126 recorded births. The name reached its all-time peak in 1998 with 343 births ranking #673. Since 1996, the popularity has decreased by 61.5%. In 2011, approximately 1 in every 13,959 girls born was named Rocio. FALLING Recent data shows the name is currently falling.