Total births
10,630
Unisex name · since 1931
Brook
10,630 babies named Brook in U.S. Social Security records since 1931, with the highest year being 1980. Year-by-year trend, decade aggregates, and state-level rankings drawn from federal birth data.
- #5470
- among girls today
- 10,630
- born since 1931
- 1990s
- peak decade
- 69%
- more common than other girls
Brook currently ranks #5470 among unisex names in America, with 10,630 babies recorded since 1931.
According to the U.S. Social Security Administration, Brook has been recorded 10,630 times among girls since 1931, currently ranked #5470 nationally and more common than 69% of girls, with its heaviest use in the 1990s. This profile covers year-by-year birth trends, decade totals, and state-level distribution, all derived directly from SSA birth-registration files spanning 1931 to 2025.
- #5470 among girls today
- 10,630 born since 1931
- 1990s peak decade
- 69% more common than other girls
Data updated Jun 2026
The verdict
Brook is currently the #5470 unisex name in America, more common than 69% of girls - 10,630 born since 1931, peaking in the 1990s.
- #5470
- among girls today
- 10,630
- born since 1931
- 1990s
- peak decade
- 69%
- more common than other girls
Brook vs. every other girls name in current SSA rankings
#5470
of 17,726 girls in use
More common than 69% of names given to girls today.
1990s
Peak decade
28% of everyone ever named Brook was born in this single decade.
1980
Single peak year
405 babies were named Brook in 1980 - its busiest year on record.
How Brook compares
10,630 Top 9% higher than 91% of 17,726 names currently given to girls
Based on all-time total births among currently-ranked girls names. Names with fewer occurrences are grouped into wider buckets on the right.
Source U.S. Social Security Administration, national baby name data
How the numbers stack up
Brook's all-time total is 28x the median girls name, and Olivia still leads by a wide margin.
| Metric | Brook | Median girls name (Emerly) | #1 girls name (Olivia) |
|---|---|---|---|
| All-time total births | 10,630 | 382 | 567,345 |
| Peak-year births | 405 | 48 | 19,840 |
Brook's usage pattern, beyond the headline number
Brook splits its recorded history at 1986: 64% of all births land in the more recent half, 36% in the earlier half, a lean toward present-day use rather than a passing spike. The single quietest year was 1931 (5 births) -- compare that against the 1980 peak of 405 for a sense of just how much the name's popularity has swung.
Brook at a glance
Outside the top 1,000Peak year
1980
Current rank
#5,470
Active since
1931
Brook popularity over time - girls
Annual U.S. births registered with the Social Security Administration · 1931–2025
- Peak year (1980)
- 405
- Annual births at peak, across 95 years of records
Brook popularity over time - boys
3,391 total births recorded since 1915 (Brook as boys' name)
Brook by decade
Total births in each ten-year window, peak vs trough at a glance
1990s was Brook's strongest decade.
3,009 babies received the name during that ten-year window, about 28% of all-time use.
Brook births by decade
Total births in each ten-year window
- 1930s 5
1930s
5 births
- 1940s 25
1940s
25 births
- 1950s 107
1950s
107 births
- 1960s 308
1960s
308 births
- 1970s
1970s
1,857 births
- 1980s
1980s
2,241 births
- 1990s
1990s
3,009 births
- 2000s
2000s
2,051 births
- 2010s 828
2010s
828 births
- 2020s 199
2020s
199 births
What this shows Peak: 1990s at 3,009 births (28% of all-time use).
How Brook compares to similarly-sized names
Years in SSA records vs. share of all-time use concentrated in the single peak year, among 15 girls names closest to Brook's total volume
Brook vs 15 similarly-sized girls names
Brook by state
Where Brook concentrates geographically, total births since 1931
| Rank | State | Visual share | Births | Share of total |
|---|---|---|---|---|
| #1 | California | | 979 | 9.2% |
| #2 | Texas | | 657 | 6.2% |
| #3 | Michigan | | 517 | 4.9% |
| #4 | Ohio | | 495 | 4.7% |
| #5 | Indiana | | 339 | 3.2% |
| #6 | Pennsylvania | | 324 | 3.0% |
| #7 | Illinois | | 316 | 3.0% |
| #8 | Florida | | 315 | 3.0% |
California share of Brook's total US births 9.2%
Even split
979 of 10,630 births nationwide. Compared to a flat distribution across 41 reporting states.
Brook appears in 41 states. Explore state details →
Frequently Asked Questions
How popular is the name Brook? ▼
Since 1931, Social Security records show 10,630 babies named Brook. Today it holds rank #5470 among girls. Its busiest year on record was 1980, with 405 births.
When was Brook most popular? ▼
Brook was most popular in the 1990s decade with 3,009 total births. The single peak year was 1980.
Where is Brook most popular? ▼
The top states for the name Brook are California (979 births), Texas (657 births), Michigan (517 births).
Is Brook a unisex name? ▼
Yes, Brook is used for both boys and girls. As a girl's name it has 10,630 births, and as a boy's name it has 3,391 births.
How long has the name Brook been used? ▼
Records for Brook go back to 1931, giving 95 years of history through 2025.
What names are similar to Brook? ▼
Names with a similar sound or spelling include Brooke, Brooklyn, Brooklynn, Bronwyn, and 4 more. These share a common prefix and are also used for girls.
What to do with Brook's data
- Brook's decade-level peak was the 1990s (3,009 total births); usage has since declined to 199 in the 2020s -- if you're weighing a "classic revival" angle, the trend line argues against it.
- California records the most Brooks (979 births) -- see the full state breakdown if geography matters to your decision. California names
- Weighing it against an alternative? Put two names side by side. Compare names
Figures reflect SSA-reported births only; see the methodology above for the privacy-suppression floor.
Keep exploring Brook
Nearby Names Like Brook
Names with a similar sound, spelling, or feel to Brook
Brooke Girl
#308 198,491 births
Brooklyn Girl
#107 125,197 births
Brooklynn Girl
#469 38,132 births
Bronwyn Girl
#3533 3,729 births
Brookelynn Girl
#4067 3,475 births
Compare Brook side by side: Brook vs Brooke Brook vs Brooklyn Brook vs Brooklynn
Related Names
Names with a similar popularity rank to Brook
Marialuisa #5469
647 births · Peak 2007
Annamaria #5471
3,783 births · Peak 1966
Gioia #5468
732 births · Peak 2016
Jayme #5472
14,071 births · Peak 1985
Keiko #5467
1,170 births · Peak 1995
Elicia #5473
4,295 births · Peak 1983
Wiley #5466
394 births · Peak 2023
Ebony #5474
38,998 births · Peak 1982
Data Sources
Data as of June 2026. Source: U.S. Social Security Administration (SSA).
According to the Social Security Administration, this profile draws directly from the agency's public-use baby-name files (updated June 2026). See our methodology for the full extraction, aggregation, and privacy-suppression rules.
Primary: Source: U.S. Social Security Administration, Baby Names from Social Security Card Applications, National Data, 1931–2025 (ssa.gov/oact/babynames).
State-level: Source: U.S. Social Security Administration, Baby Names, State-Level Files (namesbystate.zip).
Cite this page
NameAlmanac Editorial. "Brook: #5470 Unisex Name - 10,630 Births, Peak 1980." NameAlmanac. Accessed via https://namealmanac.com/name/brook. Licensed CC BY-SA 4.0.
Name Almanac is rendered directly from the Social Security Administration's public baby-name files, no number is typed in by an editor. This profile for Brook draws directly on SSA national and state-level files, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of June 2026.