Obrien
Masculine
Obrien entered the US charts in 1921, peaked at #3559 in 1958, is rarely given in 2025 — given to only a few children a year.
How old is the name Obrien?
Obrien first appears in US birth records in 1921 — 104 years ago. The typical Obrien alive today was born around 1991, making them about 34 years old. About 200 people named Obrien are estimated to be alive in the US today.
When was the name Obrien most popular?
Obrien peaked in 1958, reaching #3559 nationally. See the whole 1958 chart.
Lists built from the same records:
What the data says
146 years of official birth records
The long climb, and where it stands now
The same years in position rather than babies
- First recorded
- 1921
- Most boys named
- 199116 — the highest on record
- Peak rank
- #3559reached in 1958
- Change vs 2019
- 0.0%7 in 2022, from 7
Rank is a position, a count is a headcount, and they move independently — a name can hold its rank while the number of babies behind it falls. Source: U.S. Social Security Administration.
Obriens among us
people named Obrien are estimated to be alive in the US today
Estimated from SSA birth records and published actuarial life tables. Method
Is it right for you
Questions parents actually ask
Fashion outlook
Obrien sits outside the current charts, and that is its own kind of answer: naming cycles can only date the names they carried up. A name this rare has no decade stamped on it — it cannot go out of fashion, because it was never in.
Based on 146 years of naming cycles. How we read them
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Obrien
Masculine
Frequently asked
- How many Obriens are there in the world?
- No country counts the world's names, so there is no worldwide figure — anyone quoting one is estimating. About 200 people named Obrien are estimated to be alive in the US today.
- How popular is the name Obrien in 2025?
- Obrien is rarely given in the US today — it does not rank in the top 2000 boy names.
- Will my child share the name Obrien with classmates?
- Obrien will almost certainly be the only one in school.
More O names
The most-given names starting with O, all years combined.
Oliver#3 · Owen#31 · Oscar#223 · Omar#260 · Otis#652 · Orlando#871 · Otto#277 · Orville#6143
Looking for what else is popular rather than what resembles Obrien? See the current top 100.
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US figures from the Social Security Administration. 1880–2025. Data & methodology
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