How Many People Are Named Gaius?
An estimated 463 people in the United States have the first name Gaius. It is almost exclusively a male name. The average bearer is 14 years old, and Gaius peaked in popularity in 2014 with 42 births that year.
Below you will find a full statistical profile of Gaius as a first name in the United States, including gender data, a year-by-year popularity timeline going back to 1880, a decade breakdown, and state-by-state birth registrations. You can also check how many people share the full name Gaius paired with any surname.
Estimated Living Americans
463
About 1 in 740,290 people in the U.S.
Rarity
Very Rare
Predicted Gender
Male
100.0% confidence
Average Age
14
years old
Peak Year
2014
42 births
Total Registered
498
since 1880
Gender Distribution for Gaius
Gaius is almost exclusively a male name. Out of 498 total births registered, 100.0% were male.
Gaius as a male name
Ranked #3,618 in 2024
31 male births in 2024
Peak: 2014 (42 births)
Gaius: Popularity Over Time
SSA records for Gaius span from the 1920s to the 2020s, covering 10 decades of naming data. The most popular decade for this name was the 2010s, when 229 babies were registered. While Gaius is less common than at its peak in the 2010s, it remains a well-established name with steady registrations.
Gaius by Decade
How has Gaius tracked across different eras? The table below groups all SSA birth registrations into 10-year periods, with separate male and female counts. The colored bar shows each decade's share relative to the peak.
Gaius by State
Gaius + Last Name Combinations
How many people share a full name with Gaius as the first name? Click a combination below to see the estimate, or search any pairing.
Names Similar to Gaius
Other first names starting with G with a similar number of bearers.
Gaius: Questions and Answers
How many people in the U.S. are named Gaius?
We estimate approximately 463 people named Gaius are alive in the United States today. This is based on SSA birth records from 1880 to 2024, adjusted for mortality using CDC life tables. About 1 in 740,290 Americans share this first name.
Is Gaius a common name?
Gaius is classified as "Very Rare" and is more popular than 83.8% of all first names in the SSA database. A total of 498 births have been registered with this name since 1880.
When was Gaius most popular?
Gaius reached peak popularity in 2014, when 42 babies were given this name. The average age of a living person named Gaius is approximately 14 years old, reflecting when the name was most commonly given.
Is Gaius a male name?
Gaius is predominantly male. 100.0% of people with this name are male. See the gender breakdown above for full details.
How many Gaius Smiths are there?
To find how many people share a specific full name, we combine first name and surname frequencies. Try: Gaius Smith, Gaius Johnson, Gaius Williams. You can also search any combination on our homepage.
Where does this data come from?
Our estimates use Social Security Administration birth records (1880 to 2024), adjusted for survival using CDC 2023 life tables broken down by sex. The U.S. population figure (342,754,338) is from the Census Bureau's July 2025 estimate. Full methodology.
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