Masterpiece Generator Name Generator
How popular is the name Caio?
Births per year, rank history and how many Caios are alive today.
Caio (male) is an uncommon boys' name in England and Wales, ranked 873rd in 2025 with 36 babies given the name. This spelling of the name peaked in 2022, when 43 babies were given the name, the 758th most popular that year. Its fortunes dipped to rank 1076 in 2024 before climbing back to the 873rd place it holds today. Numbers have been stable in recent years. Caio is one spelling of a name also recorded as Cayo; the combined figures below cover every spelling.
Across all spellings of the name, the Caio you are most likely to meet is around 4 years old. Half of all Caios born in England and Wales are between 5 and 17, and there are at least 630 of them alive today. If you walk into a room of 100 males, there's less than a 1% chance that anyone will be called Caio - on average, only one in every 481 such rooms contains a Caio.
How many babies are named Caio each year?
Includes all spellings: Caio, Cayo. Figures before 1996 are estimates.
Where does the Caio spelling rank?
Where does the Cayo spelling rank?
Where this data comes from
Figures from 1996 onwards are the Office for National Statistics' annual baby-name registrations for England and Wales, which record every name given to three or more babies in a year. Figures before 1996 are estimates: the ONS published only top-100 rankings at ten-year intervals back to 1904, so counts for those years are modelled from the rankings, calibrated against Douglas Galbi's long-run research into English name frequencies, and shown with an uncertainty band. Estimates of living bearers combine these birth figures with national life tables and ONS mid-year population estimates.
One limit worth naming: these figures count names as registered at birth. Anyone who changes their name later in life - including trans people, and anyone who adopts a different name by deed poll or simply by use - is not reflected here. Birth registrations record where a name began, not the name a person lives with.
Common questions
When was the name Caio most popular?
Caio peaked in 2022, when 43 babies in England and Wales were given the name across all spellings.
How many people are called Caio?
At least 630 people named Caio in any spelling born in England and Wales are alive today.
How old is the typical Caio?
Most living Caios are between 5 and 17; the most common age is about 4.
Is Caio becoming more or less popular?
Broadly steady in recent years.