How Many People Are Named Barnaby?
An estimated 349 people in the United States have the first name Barnaby. It is almost exclusively a male name. The average bearer is 40 years old, and Barnaby peaked in popularity in 1974 with 19 births that year.
Below you will find a full statistical profile of Barnaby 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 Barnaby paired with any surname.
Estimated Living Americans
349
About 1 in 982,104 people in the U.S.
Rarity
Very Rare
Predicted Gender
Male
100.0% confidence
Average Age
40
years old
Peak Year
1974
19 births
Total Registered
375
since 1880
Gender Distribution for Barnaby
Barnaby is almost exclusively a male name. Out of 375 total births registered, 100.0% were male.
Barnaby as a male name
Ranked #9,996 in 2024
7 male births in 2024
Peak: 1974 (19 births)
Barnaby: Popularity Over Time
SSA records for Barnaby span from the 1950s to the 2020s, covering 8 decades of naming data. The most popular decade for this name was the 1970s, when 123 babies were registered. Barnaby has declined significantly from its peak in the 1970s. Recent registrations are a fraction of what they were at the name's height.
Barnaby by Decade
How has Barnaby 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.
Barnaby by State
Barnaby + Last Name Combinations
How many people share a full name with Barnaby as the first name? Click a combination below to see the estimate, or search any pairing.
Names Similar to Barnaby
Other first names starting with B with a similar number of bearers.
Barnaby: Questions and Answers
How many people in the U.S. are named Barnaby?
We estimate approximately 349 people named Barnaby 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 982,104 Americans share this first name.
Is Barnaby a common name?
Barnaby is classified as "Very Rare" and is more popular than 80.8% of all first names in the SSA database. A total of 375 births have been registered with this name since 1880.
When was Barnaby most popular?
Barnaby reached peak popularity in 1974, when 19 babies were given this name. The average age of a living person named Barnaby is approximately 40 years old, reflecting when the name was most commonly given.
Is Barnaby a male name?
Barnaby is predominantly male. 100.0% of people with this name are male. See the gender breakdown above for full details.
How many Barnaby Smiths are there?
To find how many people share a specific full name, we combine first name and surname frequencies. Try: Barnaby Smith, Barnaby Johnson, Barnaby 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.
Search for a full name combination
How Many of Me