boy's name
Caius
- Gender Boy
- Letters 5
- Popularity Top 1000 (US)
- Births on record 3,248
the United States
#927
2025 births
Caius is a boy's name. In 2025 it was given to 254 babies in the United States, ranking #927. It is a well-established, commonly used name.
- Peaked in 2025, when 254 babies were given the name.
- It has been rising over the past decade.
- Today about 1 in 13,053 babies in the United States is given this name.
- First appears in US birth records in 1994.
Caius over time
Births per decade in the United States, 1990s to 2020s. The striped bar is the 2020s, still in progress — it covers 2020 to 2025, not a full ten years.
Show the numbers
| Decade | Births |
|---|---|
| 1990s | 12 |
| 2000s | 205 |
| 2010s | 1,068 |
| 2020s (to 2025) | 1,044 |
How popular is Caius?
In 2025, Caius was given to 254 babies in the United States, ranking #927 that year. It is a well-established, commonly used name.
Where Caius is used
US figures omit any name given to fewer than five babies in a year, so the rarest names are absent from the source rather than absent from use. Data & sources.
Names that peaked alongside Caius
These names rose and fell in the same era, which is why they tend to sound like they belong together.
Parents who like Caius also like
Names whose popularity has risen and fallen in step with Caius over the last century — the same taste, a different name.
Sibling names for Caius
Names from the same era that won't rhyme or share an initial with Caius — the two things that make a sibling set grate.
Common questions about Caius
How popular is the name Caius?
In 2025, Caius was given to 254 babies in the United States, ranking #927 that year. It is a well-established, commonly used name.
Is Caius a girl's or a boy's name?
Caius is given almost entirely to boys in birth records.
When was Caius most popular?
Caius peaked in 2025, when 254 babies were given the name. It has been rising over the past decade.
Is Caius a good name?
That is not something records can settle, but they can tell you what you would be choosing. Caius currently ranks #927 in the United States. It has been rising over the past decade. Everything else — how it sounds with your surname, who it reminds you of — is yours.