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Brook

#4,372 in 2025UnisexGirls' nameBoys' name

Swamp, marsh

Brook has been given to 14,021 babies in the U.S. since 1931. In 2025 it ranked #4,372 of 17,293 girls’ names in use. Its peak year was 1980, with 405 recorded. It's used for both sexes: 76% girls, 24% boys all-time.

Babies named Brook, 2025

1 in 104,000

Brook over time, 1880–2025

GirlsBoys
020040060018801900192019401960198020002020

Based on births in the U.S. Babies given the name each year. Hover the chart — or focus it and use the arrow keys — for any year. Gaps mean the name was given fewer than 5 times that year; these counts are unpublished.

Girls or boys — Brook over time

In 2025, Brook went to 68% girls and 32% boys.

19152025

A sex is only published in years it reached five applications, so a stretch at 0% or 100% means the other side stayed under that floor — not that it was never used.

Brook: meaning, origin, and history

Swamp, marsh

surname transfer

What Brook means

Brook means “swamp, marsh”, associated with Brook.

Dictionary etymologyReferences, data & attribution

* As an English surname, from the noun brook. * As a north German surname, from Low German Brook (“swamp, marsh”), related to the above. * As a Dutch surname, Americanized from Broek, from broek, also related to the above. * As a Jewish and German surname, Americanized from Bruck, Bruch (from Bruch (“wetland, marsh”)).

Excerpt from Wiktionary: Brook (English) · CC BY-SA 4.0

Wiktionary material is available under CC BY-SA 4.0.

Origin, language, and formation

Brook is used in English. Its origins include surname transfer.

Brook is recorded as a surname transferred into given-name use.

Related names and everyday forms

Related names include Brooks and Brooke.

Pronunciation and spelling

In English, Brook is pronounced /bɹʊk/.

American usage and historical context

In the United States, 10,630 girls were recorded with the name Brook between 1931 and 2025. Its highest annual count was 405 in 1980; its best national rank was #503 in 1980.

Over 5 years its rank fell, from #3,556 in 2020 to #4,372 in 2025. Over 10 years its rank fell, from #2,527 in 2015 to #4,372 in 2025.

In the United States, 3,391 boys were recorded with the name Brook between 1915 and 2025. Its highest annual count was 139 in 1961; its best national rank was #662 in 1961.

Over 5 years its rank rose, from #6,020 in 2020 to #5,893 in 2025. Over 10 years its rank rose, from #6,379 in 2015 to #5,893 in 2025.

How common is Brook?

Everything below is computed from the 2025 data — the most recent year available.

Among all babies, 2025
1 in 104,000
32 of 3,315,165 births
Among girls only
1 in 50,200
<0.01% of girls
Rank, 2025
#4,372
of 17,293 girls’ names in use
Coin-flip room size
71,810 kids
Even odds of a second one

Where Brook sits on the popularity scale

Rarest published (5 a year)#1 — Olivia (13,544)

Chance at least one other child shares the name

If the other children were drawn at random from the 2025 national name distribution. Real classrooms cluster by region and community, so treat these as a floor, not a ceiling.

Class of 20Under 1%
Class of 30Under 1%
Grade of 100Under 1%
School of 500Under 1%

Put another way: gather 71,810 children born in 2025 and it's an even bet that one of them is another Brook. In a class of 30 the chance is Under 1%.

When Brooks were born

Half of everyone ever recorded as Brook was born before 1992 — so the typical Brook is around 33 today.

Median birth year
1992
About 33 years old
Biggest decade
1990s
28.3% of all use
Born in the last 25 years
26.3%
Spread across generations
Recorded since 1950
10,600
People you could plausibly meet
Choose a decade

1990s — 28.3% of all recorded uses (3,009).

Is Brook rising or falling?

Rank movement and count movement can disagree — the number of distinct names in use keeps growing, so a name holding a steady count still slides down the list. Both are shown.

Rank vs 1 year ago
+1,102
Places climbed
Rank vs 5 years ago
−816
Places dropped
Rank vs 10 years ago
−1,845
Places dropped
Births vs 10 years ago
0.45×
Fewer babies than then
Share of its own peak
7.9%
Peak was 1980 (405)
Years since peak
45
Years
Year-to-year steadiness
Shifting
18.5% average annual change
Best rank ever
#503
1980

Spellings of Brook

Brook is not the most common spelling — Brooke is, with 93.9% against Brook's 5.0%.

Grouped by closeness of spelling (up to two letter changes), same sex, with a floor on all-time use. It catches Sophia/Sofia and Aiden/Ayden, and misses spellings that sound alike but look different, like Sean and Shawn.

Where Brook is used — girls

Across 1910–2025, Brook was most concentrated in Utah — about 1 in 6,667 girls, against 1 in 20,546 across all states with data. It was least common in Massachusetts (1 in —).

015 per 100,000

Most concentrated

  1. 1Utah1 in 6,667
  2. 2Idaho1 in 7,143
  3. 3Oregon1 in 8,333
  4. 4Indiana1 in 11,111
  5. 5Michigan1 in 11,111
  6. 6Washington1 in 11,111
  7. 7Colorado1 in 12,500
  8. 8Wisconsin1 in 12,500

Shading is the share of that state's recorded girls given this name, not the raw count — otherwise the map would just show which states are biggest. Unshaded states have no published records for this period. U.S. birth records suppress state-year counts below 5; state counts therefore don't add up to the national total. Every state links to its full rankings. Brook has too little recent state data to map, so this covers all years from 1910.

Where Brook is used — boys

Across 1910–2025, Brook was most concentrated in California — about 1 in 50,000 boys, against 1 in 131,231 across all states with data. It was least common in Wisconsin (1 in —).

02 per 100,000

Most concentrated

  1. 1California1 in 50,000
  2. 2Nebraska1 in 50,000
  3. 3Utah1 in 50,000
  4. 4Indiana1 in 100,000
  5. 5Michigan1 in 100,000
  6. 6Ohio1 in 100,000
  7. 7Pennsylvania1 in 100,000
  8. 8Texas1 in 100,000

Shading is the share of that state's recorded boys given this name, not the raw count — otherwise the map would just show which states are biggest. Unshaded states have no published records for this period. U.S. birth records suppress state-year counts below 5; state counts therefore don't add up to the national total. Every state links to its full rankings. Brook has too little recent state data to map, so this covers all years from 1910.

Brook around the world

Where Brook ranks in official birth records elsewhere in the world. Rankings only — the number of births isn’t comparable between places, so it isn’t shown.

  • England & Wales
    1996–2023
    #4,710
    in 2023
  • Scotland
    2001–2013
    #663
    in 2013
  • Ireland
    2007–2010
    #910
    in 2010
  • France
    2009–2025
    #5,699
    in 2025
  • Canada
    1991–2019
    #3,370
    in 2019
  • South Australia
    1971–2013
    #818
    in 2013

Popularity data from Office for National Statistics, National Records of Scotland, Central Statistics Office, Institut national de la statistique et des études économiques, Statistics Canada and Consumer and Business Services (South Australia). ONS, NRS data under Open Government Licence v3.0. CSO, CBS SA data under CC BY 4.0. INSEE data under Licence Ouverte / Etalab 2.0. StatCan data under Statistics Canada Open Licence.

Notable people named Brook

People whose public names include Brook, backed by Wikidata given-name records and ordered by linked Wikimedia pages. The name may be a middle name.

People data from Wikidata (CC0). Fame is measured, not judged — the order reflects how widely each person is documented, not the U.S. birth records popularity this page is otherwise about.

Brook in other languages

Cross-language forms and variants of Brook. Linked forms have their own page here.

BrokBrookeBrooks

Variant forms from Wikidata (CC0). Most are used mainly outside the United States; U.S. birth records statistics cover US usage only.

Brook by the numbers

The raw record for each sex the name is used for.

As a girl's name

Rank in 2025
#4,372
Trend vs 5 yrs ago
Down 816
Best rank ever
#503
1980
Peak year
1980
405 that year
First recorded
1931
Last recorded
2025
All-time count
10,630
Count in 2025
32

As a boy's name

Rank in 2025
#5,893
Trend vs 5 yrs ago
Up 127
Best rank ever
#662
1961
Peak year
1961
139 that year
First recorded
1915
Last recorded
2025
All-time count
3,391
Count in 2025
15

Names similar to Brook

Matched on shared beginnings and endings, similar length, and comparable popularity.

BronwynBrooksBroganBrochaBrookeBrodieBrooklinBronwenBrookelynBrooklynnBronxBronteBrooklynBrookelynnBrodyBrooklynneBrownieBrodiBrooklyneBrookieBrondaBrockBrookleeBrooksie

Names with a curve like Brook

Not spelling — timing. These names rose, peaked and faded in the same years as Brook, so they read as being from the same moment even when they look nothing alike.

AlysiaAlyciaRocioGriseldaMariselaNikitaNikoleLisetteDanyelleKirstinSalenaSerina

Sibling names for Brook

Names from the same era and popularity tier — the two things that make a sibling set feel deliberate — skipping lookalike spellings and shared initials.

Explore around Brook

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