Rocio is a distinctive girls' name in United States, ranking #1948 in 2015 with 104 recorded births. The name reached its all-time peak in 1998 with 343 births ranking #673. Since 1996, the popularity has decreased by 68.2%. In 2015, approximately 1 in every 17,160 girls born was named Rocio. FALLING Recent data shows the name is currently falling.