Caio is a distinctive boys' name in United States, ranking #4528 in 2011 with 21 recorded births. This places Caio in the top 32% 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 200.0%. In 2011, approximately 1 in every 90,428 boys born was named Caio. FALLING Recent data shows the name is currently falling.