How Many People Are Named Brennin?
An estimated 204 people in the United States have the first name Brennin. It is almost exclusively a male name. The average bearer is 21 years old, and Brennin peaked in popularity in 2012 with 23 births that year.
Below you will find a full statistical profile of Brennin 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 Brennin paired with any surname.
Estimated Living Americans
204
About 1 in 1,680,168 people in the U.S.
Rarity
Very Rare
Predicted Gender
Male
100.0% confidence
Average Age
21
years old
Peak Year
2012
23 births
Total Registered
207
since 1880
Gender Distribution for Brennin
Brennin is almost exclusively a male name. Out of 207 total births registered, 100.0% were male.
Brennin as a male name
Ranked #12,335 in 2015
5 male births in 2015
Peak: 2012 (23 births)
Brennin: Popularity Over Time
SSA records for Brennin span from the 1990s to the 2010s, covering 3 decades of naming data. The most popular decade for this name was the 2000s, when 104 babies were registered. While Brennin is less common than at its peak in the 2000s, it remains a well-established name with steady registrations.
Brennin by Decade
How has Brennin 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.
Brennin + Last Name Combinations
How many people share a full name with Brennin as the first name? Click a combination below to see the estimate, or search any pairing.
Names Similar to Brennin
Other first names starting with B with a similar number of bearers.
Brennin: Questions and Answers
How many people in the U.S. are named Brennin?
We estimate approximately 204 people named Brennin 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 1,680,168 Americans share this first name.
Is Brennin a common name?
Brennin is classified as "Very Rare" and is more popular than 74.5% of all first names in the SSA database. A total of 207 births have been registered with this name since 1880.
When was Brennin most popular?
Brennin reached peak popularity in 2012, when 23 babies were given this name. The average age of a living person named Brennin is approximately 21 years old, reflecting when the name was most commonly given.
Is Brennin a male name?
Brennin is predominantly male. 100.0% of people with this name are male. See the gender breakdown above for full details.
How many Brennin Smiths are there?
To find how many people share a specific full name, we combine first name and surname frequencies. Try: Brennin Smith, Brennin Johnson, Brennin 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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