Reily
Masculine · “a form of Riley or Reilly”
Reily is given to both — 536 boys and 366 girls since 1880. See other names given to both
Reily is Riley written with the ei of the Irish surname Reilly, given to boys and, less often, to girls. It is two bright syllables.
How old is the name Reily?
Reily first appears in US birth records in 1992 — 33 years ago. The typical Reily alive today was born around 2007, making them about 18 years old. About 500 people named Reily are estimated to be alive in the US today.
When was the name Reily most popular?
Reily peaked in 2006, reaching #2398 nationally. See the whole 2006 chart.
Where it comes from
From Ó Raghallaigh / Ryley to Reily
The story of Reily
Riley came into American first names from two surnames at once, an English one and the Irish Reilly, and went first to boys and then to many girls. Reily borrows the ei of the Irish spelling. No record says who first chose it, and in the record it leans to boys, with girls the smaller share.
Meaningscholars disagree
a form of Riley or Reilly
Riley may come from an English place-name, rye clearing, or from the Irish surname Ó Raghallaigh; Reily's ei points toward the Irish Reilly. The record does not say which.
How the name formed
- Ó Raghallaigh / Ryley
- Riley
- Reily
Related forms: Ó Raghallaigh
Pronouncing Reily
RY-lee
Two syllables, stressed on the first.
Nicknames for Reily
Limited
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
- 1992
- Most boys named
- 200651 — the highest on record
- Peak rank
- #2398reached in 2006
- Change vs 2018
- −37.5%5 in 2019, from 8
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.
Reily in other languages
The same name elsewhere
- Ó Raghallaigh in Irish — related form
Reilys among us
people named Reily 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
Reily 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
The trade-off
- It sounds familiar and friendly.
- It works for a girl or a boy.
- People will write Riley or Reilly.
- It leans to boys in the record; a girl named Reily may be taken for a boy on paper.
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What they receive
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Reily
Masculine
Frequently asked
- How many Reilys are there in the world?
- No country counts the world's names, so there is no worldwide figure — anyone quoting one is estimating. About 500 people named Reily are estimated to be alive in the US today.
- How popular is the name Reily in 2025?
- Reily is rarely given in the US today — it does not rank in the top 2000 boy names.
- Will my child share the name Reily with classmates?
- Reily will almost certainly be the only one in school.
More R names
The most-given names starting with R, all years combined.
Robert#92 · Richard#234 · Ronald#637 · Ryan#99 · Raymond#394 · Roger#832 · Ralph#1046 · Roy#525
Looking for what else is popular rather than what resembles Reily? See the current top 100.
Choosing between Reily and another name?
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US figures from the Social Security Administration. 1880–2025. Data & methodology
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