There are an estimated 707 people named Caio alive worldwide today. That ranks Caio at #12960 globally, with the highest concentrations in United States.
In the United States, Caio is held by approximately 707 people, ranking #12960 among first names. That works out to roughly 0 per 100,000 Americans (or 1 in 469,448 U.S. residents).
Historically Caio is used overwhelmingly as a male name (100.0% male).
Caio appears in birth records going back to 1880. Use the chart below to see how its popularity has changed across decades, and the surname section to find common pairings.