Rocio is a distinctive girls' name in United States, ranking #954 in 2001 with 233 recorded births. The name reached its all-time peak in 1998 with 343 births ranking #673. Since 1996, the popularity has decreased by 28.7%. In 2001, approximately 1 in every 7,728 girls born was named Rocio. FALLING Recent data shows the name is currently falling.