Llewellyn
Llewellyn is given to both girls and boys: 11 girls and 16 boys were given it in 2025 (#9,220 among girls’ names and #5,747 among boys’, #8,561 among all names counting both); 3,755 Americans have been recorded with it since 1880 (Social Security Administration, published May 2026).
An estimated 1,480 Americans named Llewellyn and born in the U.S. are alive in 2026 (39% of everyone recorded); the median is 59 years old and half are between 40 and 71.
Girls and boys together; gaps are years SSA did not record (fewer than 5 births).
Births of Llewellyn by year: SSA national baby-name file, 1880-2025, published May 8, 2026. SSA’s notes on the data.
What does Llewellyn mean?
Wiktionary, English section
Llewellyn is “a male given name from Welsh.”
From Welsh Llywelyn.
/ləˈwɛlɪn/
Meaning: Wiktionary, English section, as of Sep 25, 2026 (CC BY‑SA 4.0).
How popular is Llewellyn?
#5,747 among boys’ names, 2025
Llewellyn rose from #9,234 in 2015 to #5,747 in 2025 among boys’ names; its share of boys born rose from 4.2 to 9.4 per million.
79 babies in 1918, the peak
Llewellyn peaked in 1918, when 79 babies were given it (68 boys, #794 among boys’ names). The 27 births of 2025 (girls and boys) are 34% of that peak.
Births by sex.
| Year | Births | Rank | Per 1,000 boys |
|---|---|---|---|
| 2025 | 16 | #5,747 | 0.01 |
| 2024 | 13 | #6,677 | 0.01 |
| 2023 | 10 | #8,036 | 0.01 |
| 2022 | 7 | #10,427 | under 0.01 |
| 2021 | 13 | #6,536 | 0.01 |
| 2020 | 13 | #6,493 | 0.01 |
| 2019 | 8 | #9,402 | under 0.01 |
| 2018 | 7 | #10,316 | under 0.01 |
| 2017 | 10 | #7,915 | 0.01 |
| 2016 | 7 | #10,311 | under 0.01 |
Every recorded year (138)
| Year | Births | Rank | Per 1,000 boys |
|---|---|---|---|
| 2015 | 8 | #9,234 | under 0.01 |
| 2014 | 7 | #10,302 | under 0.01 |
| 2013 | 5 | #13,284 | under 0.01 |
| 2012 | 10 | #7,901 | 0.01 |
| 2011 | 8 | #9,274 | under 0.01 |
| 2010 | 11 | #7,383 | 0.01 |
| 2008 | 5 | #13,781 | under 0.01 |
| 2006 | 5 | #13,224 | under 0.01 |
| 2005 | 5 | #12,581 | under 0.01 |
| 2004 | 5 | #12,466 | under 0.01 |
| 2003 | 6 | #10,352 | under 0.01 |
| 2000 | 10 | #6,631 | 0.01 |
| 1999 | 9 | #6,874 | under 0.01 |
| 1997 | 6 | #8,825 | under 0.01 |
| 1996 | 7 | #7,643 | under 0.01 |
| 1995 | 11 | #5,364 | 0.01 |
| 1994 | 11 | #5,301 | 0.01 |
| 1993 | 5 | #9,591 | under 0.01 |
| 1992 | 6 | #8,037 | under 0.01 |
| 1991 | 5 | #9,060 | under 0.01 |
| 1990 | 13 | #4,305 | 0.01 |
| 1989 | 18 | #3,274 | 0.01 |
| 1988 | 14 | #3,625 | 0.01 |
| 1987 | 16 | #3,138 | 0.01 |
| 1986 | 14 | #3,365 | 0.01 |
| 1985 | 16 | #3,028 | 0.01 |
| 1984 | 10 | #4,095 | 0.01 |
| 1983 | 17 | #2,746 | 0.01 |
| 1982 | 20 | #2,480 | 0.01 |
| 1981 | 15 | #2,975 | 0.01 |
| 1980 | 19 | #2,583 | 0.01 |
| 1979 | 17 | #2,728 | 0.01 |
| 1978 | 17 | #2,620 | 0.01 |
| 1977 | 19 | #2,423 | 0.01 |
| 1976 | 16 | #2,664 | 0.01 |
| 1975 | 15 | #2,711 | 0.01 |
| 1974 | 28 | #1,731 | 0.02 |
| 1973 | 32 | #1,532 | 0.02 |
| 1972 | 32 | #1,527 | 0.02 |
| 1971 | 28 | #1,691 | 0.02 |
| 1970 | 28 | #1,642 | 0.02 |
| 1969 | 22 | #1,789 | 0.01 |
| 1968 | 27 | #1,530 | 0.02 |
| 1967 | 30 | #1,399 | 0.02 |
| 1966 | 27 | #1,496 | 0.02 |
| 1965 | 26 | #1,543 | 0.01 |
| 1964 | 34 | #1,362 | 0.02 |
| 1963 | 39 | #1,246 | 0.02 |
| 1962 | 36 | #1,302 | 0.02 |
| 1961 | 37 | #1,312 | 0.02 |
| 1960 | 48 | #1,136 | 0.02 |
| 1959 | 47 | #1,133 | 0.02 |
| 1958 | 41 | #1,215 | 0.02 |
| 1957 | 47 | #1,121 | 0.02 |
| 1956 | 51 | #1,062 | 0.02 |
| 1955 | 44 | #1,127 | 0.02 |
| 1954 | 42 | #1,158 | 0.02 |
| 1953 | 35 | #1,271 | 0.02 |
| 1952 | 44 | #1,101 | 0.02 |
| 1951 | 32 | #1,321 | 0.02 |
| 1950 | 38 | #1,172 | 0.02 |
| 1949 | 39 | #1,139 | 0.02 |
| 1948 | 34 | #1,245 | 0.02 |
| 1947 | 39 | #1,168 | 0.02 |
| 1946 | 38 | #1,137 | 0.02 |
| 1945 | 25 | #1,337 | 0.02 |
| 1944 | 47 | #942 | 0.03 |
| 1943 | 27 | #1,352 | 0.02 |
| 1942 | 37 | #1,131 | 0.03 |
| 1941 | 40 | #1,029 | 0.03 |
| 1940 | 43 | #989 | 0.04 |
| 1939 | 30 | #1,212 | 0.03 |
| 1938 | 44 | #957 | 0.04 |
| 1937 | 46 | #927 | 0.04 |
| 1936 | 46 | #912 | 0.04 |
| 1935 | 35 | #1,115 | 0.03 |
| 1934 | 31 | #1,206 | 0.03 |
| 1933 | 43 | #974 | 0.04 |
| 1932 | 40 | #1,070 | 0.04 |
| 1931 | 43 | #1,021 | 0.04 |
| 1930 | 49 | #969 | 0.04 |
| 1929 | 57 | #881 | 0.05 |
| 1928 | 51 | #959 | 0.05 |
| 1927 | 58 | #894 | 0.05 |
| 1926 | 53 | #940 | 0.05 |
| 1925 | 50 | #966 | 0.04 |
| 1924 | 54 | #957 | 0.05 |
| 1923 | 69 | #812 | 0.06 |
| 1922 | 56 | #935 | 0.05 |
| 1921 | 65 | #860 | 0.06 |
| 1920 | 53 | #957 | 0.05 |
| 1919 | 52 | #933 | 0.05 |
| 1918 | 68 | #794 | 0.07 |
| 1917 | 64 | #788 | 0.07 |
| 1916 | 69 | #729 | 0.08 |
| 1915 | 55 | #828 | 0.06 |
| 1914 | 43 | #809 | 0.07 |
| 1913 | 30 | #909 | 0.06 |
| 1912 | 36 | #720 | 0.08 |
| 1911 | 17 | #807 | 0.08 |
| 1910 | 18 | #722 | 0.09 |
| 1909 | 10 | #990 | 0.06 |
| 1908 | 9 | #993 | 0.06 |
| 1906 | 12 | #733 | 0.09 |
| 1905 | 5 | #1,343 | 0.04 |
| 1904 | 11 | #745 | 0.09 |
| 1903 | 6 | #1,083 | 0.05 |
| 1902 | 6 | #1,091 | 0.05 |
| 1901 | 5 | #1,144 | 0.05 |
| 1899 | 9 | #758 | 0.08 |
| 1898 | 9 | #784 | 0.07 |
| 1897 | 9 | #762 | 0.08 |
| 1896 | 10 | #757 | 0.08 |
| 1895 | 10 | #727 | 0.09 |
| 1894 | 12 | #613 | 0.10 |
| 1893 | 7 | #883 | 0.06 |
| 1892 | 6 | #1,030 | 0.05 |
| 1891 | 5 | #1,055 | 0.05 |
| 1890 | 7 | #851 | 0.06 |
| 1889 | 5 | #1,049 | 0.05 |
| 1888 | 7 | #880 | 0.06 |
| 1887 | 7 | #798 | 0.07 |
| 1886 | 9 | #673 | 0.08 |
| 1885 | 8 | #739 | 0.07 |
| 1883 | 8 | #702 | 0.08 |
| 1882 | 11 | #594 | 0.10 |
| 1881 | 8 | #680 | 0.08 |
| 1880 | 9 | #665 | 0.08 |
Ranks and shares: boys’ names in each year’s SSA file; share of all boys SSA recorded that year.
Is Llewellyn a boy’s or a girl’s name?
Of the 3,755 Americans recorded as Llewellyn, 9% are girls and 91% boys.
Years with fewer than 20 babies given the name are left blank.
Girls and boys named Llewellyn: the SSA national file counts each sex separately.
How many people are named Llewellyn, and how old are they?
1,480 alive in 2026, estimated
That is 39% of the 3,755 Americans ever recorded as Llewellyn. The median Llewellyn alive today is 59 years old; half are between 40 and 71.
The 2020 Census counted 1,719 people named Llewellyn (258 women and girls, 1,461 men and boys). SSA’s births carried forward to Census day, April 1, 2020, predict 1,602 born in the U.S. The Census count is 7% above that prediction.
Alive today, by age
Alive today, by generation
| Generation | Born | Alive |
|---|---|---|
| Silent Generation | 1928-1945 | 161 |
| Baby Boomers | 1946-1964 | 526 |
| Generation X | 1965-1980 | 336 |
| Millennials | 1981-1996 | 187 |
| Generation Z | 1997-2012 | 85 |
| Generation Alpha | 2013-2025 | 181 |
An estimate, not a count. SSA’s files count people born in the United States who received a Social Security number, so anyone born abroad is not in them; before 1937 most people got a number as adults, and their survival is counted from that age.
Living estimate: SSA births carried forward with the survival rates in SSA’s cohort life tables (2024 Trustees Report) for each birth year and sex. How the estimate is made. Count: Census Bureau, first names in the 2020 Census (released April 14, 2026; names reported 100 or more times, with the Bureau’s disclosure-avoidance adjustment).
Where are babies named Llewellyn born?
The states with the most babies named Llewellyn are Pennsylvania, New York and Maine, with 71% of its births recorded by state since 1910; Maine is not among the ten states with the most births.
| State | Since 1910 | Rank, boys | vs. national |
|---|---|---|---|
| Pennsylvania | 253 | not ranked | 1.0× |
| New York | 102 | not ranked | 0.3× |
| Maine | 61 | not ranked | 2.6× |
| Michigan | 29 | not ranked | 0.2× |
| Wisconsin | 29 | not ranked | 0.3× |
| California | 26 | not ranked | 0.1× |
| Virginia | 25 | not ranked | 0.3× |
| Hawaii | 22 | not ranked | 1.5× |
| Minnesota | 15 | not ranked | 0.2× |
| Alabama | 5 | not ranked | 0.1× |
States: SSA state file, 1910-2025, published May 8, 2026; births count girls and boys together, and the rank is among boys’ names in the state in 2025. The file leaves out any state and year with fewer than 5 babies of the name, so small states are undercounted; each ratio compares the state’s births of Llewellyn with the births its national share predicts year by year, for states with at least 100 births of the name.
Names spelled alike
Of these 3 names spelled alike, given to 4,282 babies since 1880, Llewellyn is the most given (88% of them). In 2025 it was given to 27 of their 44 babies (61%), again the most given.
Spelled alike: names in the SSA national file with the same pattern of letters and sounds and at most two letters apart, and Wiktionary’s listed forms; births since 1880 and in 2025, and each name’s peak year, from the SSA national file, published May 8, 2026. Some are separate names, not spellings of one.
Names that rose and fell in the same decades as Llewellyn
Names whose births rose and fell across the same decades, measured on each decade’s share of births.
Similar histories: each decade’s share of births, from the SSA national file, 1880-2025, published May 8, 2026. SSA’s notes on the data.
More about Llewellyn and names like it
- Compare Llewellyn and LewellynBirths, ranks, peak and the living estimate side by side.
- The most given names of the 1910sLlewellyn peaked in 1918.
- Pennsylvania’s most given namesThe state where SSA recorded the most babies named Llewellyn since 1910.
- Welsh namesWiktionary’s origin for Llewellyn: every such name, by how often it is given.
- The top names of 1918The year the most babies were named Llewellyn.
- The names of the Baby BoomersMost people named Llewellyn alive today were born 1946-1964.
- Names starting with LMost given first.