Recorded 1943–2025 · United States
Brynn was most popular in 2011, when 1,671 American babies were given the name — ranking #407 that year. In 2025 it ranked #833, with 774 births. Across 1880–2025 the Social Security Administration has recorded 30,211 people named Brynn.
Brynn first appears in Social Security Administration records in 1943, which makes it about 82 years old as a recorded American name. It has been recorded in 76 of the 83 years since.
The Social Security Administration has recorded 30,211 American births named Brynn between 1880 and 2025. That is recorded US births, not a world population — it counts people issued a Social Security number at birth in the United States. Of those, roughly 29,874 are estimated to be alive today.
774 American babies were named Brynn in 2025, ranking #833 that year.
Brynn is falling. Across 2021–2025 it averaged 803 births a year, against 1,466 a year across 2011–2015 — a change of -45% over the decade.
Measured on recorded births. American births overall have fallen since 2007, so most established names lose births over any recent decade — a name can shed births and still hold its rank. Compare the rank above, which is measured against the other names of the same year.
Across the whole record Brynn is a girl’s name — 98.7% of the 30,211 Americans given it were girls and 1.3% were boys. In births since 2016 it is 99% girls and 1% boys.
Counted from every US birth the Social Security Administration recorded under this name, so it reflects use rather than opinion. A name given to fewer than five babies of one sex in a year is withheld at source and is not counted.
Roughly 29,874 Americans named Brynn are alive today — 99% of everyone ever recorded with the name. The median is 14 years old, and half are between 9 and 22.
An estimate, not a count. Recorded births are carried forward through the Social Security Administration’s 2023 period life table, by age and sex. That table describes mortality in one recent year, so it credits the oldest cohorts with today’s survival rather than the harsher rates they actually lived through — the further back a name peaked, the more this will overstate how many remain. It counts people issued a Social Security number at birth, not immigrants who arrived later.
How much more common the name is in each state than across the country as a whole.
See Brynn on the interactive charts
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Source: U.S.A. Social Security Administration. Years 1880–2025. namelegacy.org