Baby Names US
Unisex name ★ peaked 1918

Llewellyn

Meaning A male given name from Welsh Gender Unisex · 9% girls Rank 2025 #5,749 Trend ↑ Rising 44%

A male given name from Welsh.

Rank 2025
#5,749
among boys · ↑933 vs 2024
Babies in 2025
27
named Llewellyn
How common
1 in 106,755
boys born in 2025
Peak year
1918
79 babies
All-time total
3,755
#2,324 all-time among boys
First recorded
1880
in Social Security records

Llewellyn popularity over time

3,755 babies have been named Llewellyn since 1880, according to official Social Security records. Switch measure to see births per year or the yearly rank.

Measure
Births per 1,000 babies of that sex, comparable across eras
0.040.080.110.1518801900192019401960198020002020BoysGirls
BoysGirls

By decade. Change compares yearly averages, so the current partial decade is on equal footing. Best rank is the name's best yearly rank within the decade.

Decade Girls Boys Total Per year Change Best rank
1880s – 72 72 7 – #594
1890s – 84 84 8 +17% #613
1900s 13 64 77 8 -8% #733
1910s 65 452 517 52 +571% #720
1920s 72 566 638 64 +23% #812
1930s 73 407 480 48 -25% #912
1940s 30 369 399 40 -17% #942
1950s 24 421 445 45 +12% #1,063
1960s – 326 326 33 -27% #1,137
1970s – 232 232 23 -29% #1,527
1980s – 159 159 16 -31% #2,481
1990s – 73 73 7 -54% #4,311
2000s 6 36 42 4 -42% #6,639
2010s 13 81 94 9 +124% #7,389
2020s (to 2025) 45 72 117 20 +107% #5,749

The story of Llewellyn

Llewellyn is rare for boys in the United States, ranked #5,749 in 2025 with 16 babies given the name. It is currently rising compared with a decade ago.

Since 1880, 3,755 American babies have been named Llewellyn, about 91% boys and 9% girls, making it a genuinely unisex name. Its peak came in 1918, when 79 newborns received the name, the signature sound of the 1910s.

The chart above shows the full history: the popularity view (births per 1,000 babies) is the honest comparison across generations, since total US births have changed enormously since 1880. Switch to the rank view to see where Llewellyn stood among all boys' names in any year, or use the compare tool to plot it against other names.

How old are people named Llewellyn?

The median living Llewellyn is about 60 years old; half are between 40 and 72. An estimated 1,600 people named Llewellyn are alive in the United States today.

median 60 020406080100

Estimated from births per year and Social Security period life tables; an approximation of the living age distribution, by age in years.

Llewellyn year by year

Every year since 2001, and five-year steps back to 1880. Rank is within each sex.

Year Girls Girls rank Boys Boys rank
2025 11 #9,223 16 #5,749
2024 6 #14,533 13 #6,682
2023 7 #12,909 10 #8,041
2022 8 #11,817 7 #10,433
2021 7 #12,960 13 #6,541
2020 6 #14,423 13 #6,497
2019 5 #17,020 8 #9,407
2018 – – 7 #10,322
2017 – – 10 #7,919
2016 – – 7 #10,316
2015 8 #12,506 8 #9,240
2014 – – 7 #10,308
2013 – – 5 #13,291
2012 – – 10 #7,907
2011 – – 8 #9,281
2010 – – 11 #7,389
2009 – – – –
2008 6 #16,654 5 #13,788
2007 – – – –
2006 – – 5 #13,231
2005 – – 5 #12,589
2004 – – 5 #12,473
2003 – – 6 #10,359
2002 – – – –
2001 – – – –
2000 – – 10 #6,639
1995 – – 11 #5,370
1990 – – 13 #4,311
1985 – – 16 #3,031
1980 – – 19 #2,584
1975 – – 15 #2,713
1970 – – 28 #1,643
1965 – – 26 #1,544
1960 – – 48 #1,137
1955 – – 44 #1,128
1950 – – 38 #1,173
1945 – – 25 #1,338
1940 5 #4,743 43 #989
1935 9 #3,059 35 #1,115
1930 6 #4,322 49 #969
1925 6 #4,722 50 #966
1920 – – 53 #957
1915 5 #4,660 55 #828
1910 – – 18 #722
1905 – – 5 #1,344
1900 – – – –
1895 – – 10 #727
1890 – – 7 #851
1885 – – 8 #739
1880 – – 9 #665

Frequently asked questions

Quick answers about Llewellyn, drawn from the same Social Security data as the charts above.

How old is the average Llewellyn?

The median living Llewellyn is about 60 years old. Half of all living Llewellyns are between 40 and 72 years old.

How many people named Llewellyn are alive today?

An estimated 1,600 people named Llewellyn are alive in the United States, based on 3,755 recorded births and Social Security life tables.

What does the name Llewellyn mean?

A male given name from Welsh.

How popular is the name Llewellyn in 2025?

Llewellyn ranked #5,749 among boys' names in the United States in 2025, with 16 babies given the name, according to Social Security Administration data.

How many people are named Llewellyn?

3,755 babies have been named Llewellyn in the United States since 1880, based on Social Security card applications.

When was the name Llewellyn most popular?

Llewellyn peaked in 1918, when 79 newborns received the name.

Is Llewellyn a boy or girl name?

Llewellyn is used for both: about 9% of babies named Llewellyn have been girls and 91% boys.

Is the name Llewellyn rising or falling?

Llewellyn is on the rise, noticeably more popular now than a decade ago.

Names like Llewellyn

Names that sound and feel close to Llewellyn: shared sounds, similar era, similar popularity. Each links to its full history.

Compare Llewellyn with similar names → More names starting with L →