Rocio is a distinctive girls' name in United States, ranking #1007 in 2005 with 243 recorded births. The name reached its all-time peak in 1998 with 343 births ranking #673. Since 1996, the popularity has decreased by 25.7%. In 2005, approximately 1 in every 7,604 girls born was named Rocio. FALLING Recent data shows the name is currently falling.