Unisex name · since 1916
Llewelyn
178 babies named Llewelyn in U.S. Social Security records since 1916, with the highest year being 2024. Year-by-year trend, decade aggregates, and state-level rankings drawn from federal birth data.
- #13,683 of 45,481
- all-time among boys
- #5,424 of 13,930
- 2025 SSA year
- 178
- born since 1916
- 2020s
- peak decade
Yes -- Llewelyn is the #5424 most popular unisex name in the U.S. today, with 178 recorded since 1916.
According to the U.S. Social Security Administration, Llewelyn has been recorded 178 times among boys since 1916, currently ranked #5424 nationally and more common than 61% of boys, with its heaviest use in the 2020s. This profile covers year-by-year birth trends, decade totals, and state-level distribution, all derived directly from SSA birth-registration files spanning 1916 to 2025.
- #13,683 of 45,481 all-time among boys
- #5,424 of 13,930 2025 SSA year
- 178 born since 1916
- 2020s peak decade
Data updated Aug 2026
The verdict
According to the U.S. Social Security Administration, Llewelyn ranks #13,683 of 45,481 boys' names by all-time recorded births (highest first) and #5,424 of 13,930 among boys' names in 2025. 178 born since 1916, peaking in the 2020s.
- #13,683 of 45,481
- all-time among boys
- #5,424 of 13,930
- 2025 SSA year
- 178
- born since 1916
- 2020s
- peak decade
Llewelyn's 178 recorded births place it above 69.88% of the 45,481 boys names in the full SSA archive.
No state rows cleared SSA’s public reporting threshold for this name.
How Llewelyn compares
178 36th percentile among 13,930 names currently given to boys
Based on all-time total births among currently-ranked boys names. Names with fewer occurrences are grouped into wider buckets on the right.
Source U.S. Social Security Administration, national baby name data
How the numbers stack up
Llewelyn's all-time total is 52% below the median boys name, and Liam still leads by a wide margin.
| Metric | Llewelyn | Median boys name (Takari) | #1 boys name (Liam) |
|---|---|---|---|
| All-time total births | 178 | 369 | 358,536 |
| Peak-year births | 24 | 34 | 22,252 |
Llewelyn's usage pattern, beyond the headline number
Llewelyn splits its recorded history at 1976: 62% of all births land in the more recent half, 38% in the earlier half, a lean toward present-day use rather than a passing spike. The single quietest year was 1918 (5 births) -- compare that against the 2024 peak of 24 for a sense of just how much the name's popularity has swung.
Llewelyn popularity over time - boys
Annual U.S. births registered with the Social Security Administration · 1916–2025
- Peak year (2024)
- 24
- Annual births at peak, across 110 years of records
Llewelyn popularity over time - girls
10 total births recorded since 2017 (Llewelyn as girls' name)
Llewelyn by decade
2020s is the heaviest window (83 births, 47% of the file).
2020s was Llewelyn's strongest decade.
83 babies received the name during that ten-year window, about 47% of all-time use.
Llewelyn births by decade
Total births in each ten-year window
- 1910s 13
1910s
13 births
- 1920s 20
1920s
20 births
- 1950s 22
1950s
22 births
- 1960s 7
1960s
7 births
- 1970s 15
1970s
15 births
- 2010s 18
2010s
18 births
- 2020s
2020s
83 births
What this shows Peak: 2020s at 83 births (47% of all-time use).
Frequently Asked Questions
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Keep exploring Llewelyn
Nearby Names Like Llewelyn
Names with a similar sound, spelling, or feel to Llewelyn
Compare Llewelyn side by side: Llewelyn vs Llewellyn Llewelyn vs Lleyton Llewelyn vs Llewyn
Related Names
Names with a similar popularity rank to Llewelyn
Nationwide names with similar peak year or record span
Two nationwide peer axes for Llewelyn: closest SSA peak year, and closest first→latest record span. Distinct from the spelling and current-rank neighborhoods above.
Similar peak year (~2024)
Similar record span (~109 yrs)
Peak year is the single SSA year with the most births for that name; record span is first-to-latest year in the national files, not a recommendation or shared origin claim.
Data Sources
Data as of August 2026. Source: U.S. Social Security Administration (SSA).
According to the Social Security Administration, this profile draws directly from the agency's public-use baby-name files (updated June 2026). See our methodology for the full extraction, aggregation, and privacy-suppression rules.
Primary: Source: U.S. Social Security Administration, Baby Names from Social Security Card Applications, National Data, 1916–2025 (ssa.gov/oact/babynames).
State-level: Source: U.S. Social Security Administration, Baby Names, State-Level Files (namesbystate.zip).
Name Almanac is rendered directly from the Social Security Administration's public baby-name files, no number is typed in by an editor. This profile for Llewelyn draws directly on SSA national and state-level files, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of August 2026.