How Many People Are Named Brook?
An estimated 13,093 people in the United States have the first name Brook. It is used for both genders, with 75.8% female. The average bearer is 37 years old, and Brook peaked in popularity in 1980 with 496 births that year.
Below you will find a full statistical profile of Brook 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 Brook paired with any surname.
Key Insights
- Brook has undergone a significant gender shift. Originally given predominantly to boys, it is now more commonly a girls' name.
Estimated Living Americans
13,093
About 1 in 26,178 people in the U.S.
Rarity
Uncommon
Predicted Gender
Female
75.8% confidence
Average Age
37
years old
Peak Year
1980
496 births
Total Registered
13,973
since 1880
Gender Distribution for Brook
Brook is a genuinely unisex name, used for both males (24.2%) and females (75.8%). Out of 13,973 total births registered, 3,376 were male and 10,597 were female.
Brook as a male name
Ranked #6,206 in 2024
14 male births in 2024
Peak: 1961 (139 births)
Brook as a female name
Ranked #5,634 in 2024
22 female births in 2024
Peak: 1980 (405 births)
Brook: Popularity Over Time
SSA records for Brook span from the 1910s to the 2020s, covering 12 decades of naming data. The most popular decade for this name was the 1990s, when 3,428 babies were registered. Brook has declined significantly from its peak in the 1990s. Recent registrations are a fraction of what they were at the name's height.
Brook by Decade
How has Brook 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.
Brook by State
Birth registrations for Brook span all 41 states and territories in the SSA database. The highest counts are in California, Texas, Ohio. The lowest are in South Dakota, Massachusetts, Montana. On average, about 199 Brooks were registered per state.
Brook + Last Name Combinations
How many people share a full name with Brook as the first name? Click a combination below to see the estimate, or search any pairing.
Names Similar to Brook
Other first names starting with B with a similar number of bearers.
Brook: Questions and Answers
How many people in the U.S. are named Brook?
We estimate approximately 13,093 people named Brook 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 26,178 Americans share this first name.
Is Brook a common name?
Brook is classified as "Uncommon" and is more popular than 98.1% of all first names in the SSA database. A total of 13,973 births have been registered with this name since 1880.
When was Brook most popular?
Brook reached peak popularity in 1980, when 496 babies were given this name. The average age of a living person named Brook is approximately 37 years old, reflecting when the name was most commonly given.
Is Brook a female name?
Brook is predominantly female. 75.8% of people with this name are female. See the gender breakdown above for full details.
How many Brook Smiths are there?
To find how many people share a specific full name, we combine first name and surname frequencies. Try: Brook Smith, Brook Johnson, Brook 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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