Rocio is a distinctive girls' name in United States, ranking #1127 in 2009 with 225 recorded births. The name reached its all-time peak in 1998 with 343 births ranking #673. Since 1996, the popularity has decreased by 31.2%. In 2009, approximately 1 in every 8,164 girls born was named Rocio. FALLING Recent data shows the name is currently falling.