Rocio is a distinctive girls' name in United States, ranking #864 in 2004 with 285 recorded births. The name reached its all-time peak in 1998 with 343 births ranking #673. Since 1996, the popularity has decreased by 12.8%. In 2004, approximately 1 in every 6,443 girls born was named Rocio. FALLING Recent data shows the name is currently falling.