Caio is a distinctive boys' name in United States, ranking #7243 in 1996 with 7 recorded births. This places Caio in the bottom 31% of ranked US boys' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2023 with 40 births ranking #3063. In 1996, approximately 1 in every 270,605 boys born was named Caio. FALLING Recent data shows the name is currently falling.