Brook
Girl name · #4376 in 2025 · Very rare
How old is the name Brook? In official American birth records, Brook has been tracked continuously since 1931, giving it 94 years of documented American history.
Brook ranks #4376 among American girls' names as of 2025, with 32 newborns given the name that year. A decade ago it stood at #2524, so the name has been falling over the past ten years. Roughly one in every 56,250 girls born in 2025 was named Brook.
Babies named Brook per year. Source: Official national birth records.
The 94-year story
Brook first appears in the Social Security records in 1931, when 5 girls received the name. Its peak came in 1980, when 405 girls were named Brook — good for #503 that year. Today's parents encounter it as a name from their grandparents’ generation, which is precisely the vintage window from which names get revived. Following the curve matters more than today's snapshot: a name's position on its rise-peak-decline arc is the best predictor of how common it will feel in a kindergarten class five years from now.
Unlock the 5-year forecast and compare Brook against up to 5 other names.
Uniqueness: will there be another Brook in class?
On our rarity read — which blends how common Brook is today with its five-year momentum — the name reads as "very rare". A high score means genuine rarity — your Brook will likely be the only one in the room, with the occasional spelling-out as the price.
Where Brook is most common
State-level data for Brook is too sparse in 2025 to rank by rate — in most states its count falls below the SSA's per-state reporting threshold (counts under 5 are withheld).
Names like Brook
Statistically, parents drawn to Brook tend to be choosing among names with similar popularity arcs, era profiles, and sounds — the closest matches in our model are Brie, Mirna, Elicia, Salina, and Brandi.
BrieMirnaEliciaSalinaBrandiJessiMichalShilo
Rank history (last 25 years)
| Year | Babies named Brook | Rank |
|---|---|---|
| 2025 | 32 | #4352 |
| 2024 | 23 | #5443 |
| 2023 | 34 | #4191 |
| 2022 | 32 | #4378 |
| 2021 | 36 | #4014 |
| 2020 | 42 | #3546 |
| 2019 | 51 | #3130 |
| 2018 | 42 | #3614 |
| 2017 | 57 | #2903 |
| 2016 | 83 | #2287 |
| 2015 | 71 | #2524 |
| 2014 | 62 | #2781 |
| 2013 | 104 | #1918 |
| 2012 | 119 | #1733 |
| 2011 | 125 | #1679 |
| 2010 | 114 | #1794 |
| 2009 | 139 | #1612 |
| 2008 | 168 | #1415 |
| 2007 | 213 | #1189 |
| 2006 | 195 | #1234 |
| 2005 | 185 | #1227 |
| 2004 | 183 | #1216 |
| 2003 | 243 | #959 |
| 2002 | 194 | #1094 |
| 2001 | 252 | #900 |
Frequently asked questions
How old is the name Brook?
In official American birth records, the name Brook first appeared in 1931 (over 94 years ago), when 5 newborn girls received the name. It has been tracked in modern national records for 94 years.
Is Brook a popular girl name?
Brook ranked #4376 among girls in 2025 with 32 babies given the name — outside the top 500, making it an uncommon pick. Ten years earlier it ranked #2524.
When was the name Brook most popular?
Brook peaked in 1980, when 405 American girls received the name (ranked #503 that year). Since 1980 the name has declined from that high.
How rare is the name Brook?
In 2025, roughly 1 in 56,250 newborn American girls was named Brook. On our rarity scale (rarity blended with momentum) we classify it as "very rare".
Data source: Official American birth records, 1880–2025, national and state files. Counts reflect registered birth records for American families.