Llewellyn
Llewellyn was the 5749th most popular name for boys in 2025, given to 16 babies. Its best year was 1882, when it ranked 594th; the most babies were born in 1916 (69). Over the last ten years it has moved up 3,491 places. More babies were named Llewellyn in the 1920s than in any other decade.
Meaning Not yet researched how we research meanings
- Rank in 2025
- #5,749 boys, up 748 places since 2020
- Babies in 2025
- 16boys
- Girls and boys
- 40% girls, 60% boys2021–2025
- Peak year
- 191669 babies
- Total since 1880
- 3,755babies recorded
Llewellyn popularity since 1880
| Year | Rank (girls) | Rank (boys) | Babies (girls) | Babies (boys) |
|---|---|---|---|---|
| 2025 | #9,223 | #5,749 | 11 | 16 |
| 2020 | #14,423 | #6,497 | 6 | 13 |
| 2010 | — | #7,389 | — | 11 |
| 2000 | — | #6,639 | — | 10 |
| 1990 | — | #4,311 | — | 13 |
| 1980 | — | #2,584 | — | 19 |
| 1970 | — | #1,643 | — | 28 |
| 1960 | — | #1,137 | — | 48 |
| 1950 | — | #1,173 | — | 38 |
| 1940 | #4,743 | #989 | 5 | 43 |
| 1930 | #4,322 | #969 | 6 | 49 |
| 1920 | — | #957 | — | 53 |
| 1910 | — | #722 | — | 18 |
| 1900 | — | — | — | — |
| 1890 | — | #851 | — | 7 |
| 1880 | — | #665 | — | 9 |
How popular is Llewellyn, counting every spelling?
Llewellyn has no other common spelling that sounds the same.
How many kids will share the name Llewellyn?
16 of the 3,606,400 babies born in the US in 2025 were named Llewellyn (0.00 per 1,000 births). For a boy named Llewellyn born in 2025, the chance that another child with the same name is in a class of 20 children the same age is under 1 in 50. If every grade liked the name as much as the 2025 babies do, only about one elementary school in 529 (of 430 pupils) would have a child named Llewellyn.
Shares of all registered births (NCHS); classes assumed to be children born the same year. How we estimate this.
How old are people named Llewellyn?
About 1,400 people born in the US named Llewellyn are alive today, with a median age of 59; half are between 42 and 71. That makes Llewellyn a name most people associate with older generations.
Babies given the name each year (SSA) times the share of that birth year still alive (SSA life tables). Counts people born in the US only. Method.
Names with a similar history
These names rose and fell in step with Llewellyn: their share of US boys followed the most similar curve since 1880. If you like Llewellyn, they share its era and feel.
Questions about the name Llewellyn
How popular is the name Llewellyn?
Llewellyn was the 5749th most popular name for boys in 2025, given to 16 babies. Its best year was 1882, when it ranked 594th; the most babies were born in 1916 (69). Over the last ten years it has moved up 3,491 places. More babies were named Llewellyn in the 1920s than in any other decade.
Is Llewellyn a boy or girl name?
In 2021–2025, 40% girls, 60% boys given the name Llewellyn in the US.