Reilly
Reilly is a name with a single cultural origin: English.
- English
Meaning & Origin of Reilly
What this name means, where it came from, and how it has traveled across cultures.
Reilly is a name with a single cultural origin: English.
Origin data from Behind the Name .
Cultural Origins (via Behind the Name)
- English
The Story of Reilly
As a girl name
Reilly first appeared in U.S. Social Security Administration records as a girl name in 1978, with 6 babies given the name that year. Its peak popularity came in 1998, when 379 Reillys were born — ranking #623 that year. As of 2026, Reilly ranks #3,066 for girls with 53 births, falling sharply (-23%). In total, more than 6K Reillys have been born in the U.S. since records began in 1880, spanning the 1970s through the 2020s.
As a boy name
Reilly first appeared in U.S. Social Security Administration records as a boy name in 1953, with 6 babies given the name that year. Its peak popularity came in 2007, when 218 Reillys were born — ranking #909 that year. As of 2026, Reilly ranks #2,724 for boys with 48 births, falling sharply (-20%). In total, more than 5K Reillys have been born in the U.S. since records began in 1880, spanning the 1950s through the 2020s.
Popularity Over Time
Popularity by State
Names that sound like Reilly
Phonetically similar names — useful when Reilly is the vibe but a different syllable count or letter feel might suit better. Linked entries have a profile on Peek a Name.
Source: Datamuse . Phonetic similarity ranking, not curated.
Frequently Asked Questions about Reilly
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Is Reilly a unisex name?
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About the name Reilly
Reilly is a unisex baby name tracked by the U.S. Social Security Administration. It first appeared in SSA records in 1978 and has accumulated 6K births in the dataset. Reilly's peak popularity came in 1998 when it ranked #622. Use the chart and map above to compare Reilly's trajectory across years and U.S. states, or browse the related names section to discover similar choices.
Continue exploring
- Top names of 1998 →
- Names of the 1990s →
- Names starting with "R" →
- Browse all girl names →
- Top names of 2026 →
- Browse unisex names →
Data sources
- Birth statistics (counts, ranks, years 1880–2026) — U.S. Social Security Administration . Predictions for years not yet released by SSA are computed by Peek a Name from historical trends; we update with official data as soon as it ships.
- Etymology, cultural origins, and related forms — Behind the Name (used under their public API terms).
- Meaning prose and editorial summary — Wikipedia article extracts, licensed under CC BY-SA 3.0 .
- Predicted nationality distribution — Nationalize.io .
- Phonetically similar names — Datamuse .
Peek a Name aggregates and presents the above data for informational purposes. Statistical predictions and external attributions are clearly labelled where shown; we make no guarantee of accuracy beyond what each source provides.