Caio is a distinctive boys' name in United States, ranking #7214 in 2016 with 11 recorded births. This places Caio in the bottom 49% 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. Since 1996, the popularity has increased by 57.1%. In 2016, approximately 1 in every 172,474 boys born was named Caio. FALLING Recent data shows the name is currently falling.