Len
Len was given to 8 boys in 2025, #9,373 among boys’ names; 4,616 Americans have been recorded with it since 1880 (Social Security Administration, published May 2026).
An estimated 2,640 Americans named Len and born in the U.S. are alive in 2026 (57% of everyone recorded); the median is 61 years old and half are between 50 and 69.
Girls and boys together; gaps are years SSA did not record (fewer than 5 births).
Births of Len by year: SSA national baby-name file, 1880-2025, published May 8, 2026. SSA’s notes on the data.
What does Len mean?
Wiktionary, English section
Len is “a diminutive of the male given name Leonard.”
Also “a transliteration of the Russian female given name diminutive Лена (Lena)”
Meaning: Wiktionary, English section, as of Sep 25, 2026 (CC BY‑SA 4.0).
How popular is Len?
#9,373 among boys’ names, 2025
Len fell from #6,913 in 2015 to #9,373 in 2025 among boys’ names; its share of boys born fell from 6.3 to 4.7 per million.
125 babies in 1958, the peak
Len peaked in 1958, when 125 babies were given it (119 boys, #689 among boys’ names). The 8 births of 2025 are 6% of that peak.
Births by sex.
| Year | Births | Rank | Per 1,000 boys |
|---|---|---|---|
| 2025 | 8 | #9,373 | under 0.01 |
| 2024 | 8 | #9,506 | under 0.01 |
| 2023 | 12 | #7,123 | 0.01 |
| 2022 | 11 | #7,542 | 0.01 |
| 2021 | 7 | #10,351 | under 0.01 |
| 2020 | 7 | #10,172 | under 0.01 |
| 2019 | 9 | #8,603 | 0.01 |
| 2018 | 10 | #7,931 | 0.01 |
| 2017 | 8 | #9,360 | under 0.01 |
| 2016 | 10 | #7,918 | 0.01 |
Every recorded year (142)
| Year | Births | Rank | Per 1,000 boys |
|---|---|---|---|
| 2015 | 12 | #6,913 | 0.01 |
| 2014 | 15 | #5,887 | 0.01 |
| 2013 | 8 | #9,312 | under 0.01 |
| 2012 | 14 | #6,189 | 0.01 |
| 2011 | 9 | #8,493 | under 0.01 |
| 2010 | 13 | #6,576 | 0.01 |
| 2009 | 12 | #7,069 | 0.01 |
| 2008 | 5 | #13,759 | under 0.01 |
| 2007 | 10 | #7,940 | under 0.01 |
| 2006 | 12 | #6,725 | 0.01 |
| 2005 | 11 | #6,908 | 0.01 |
| 2004 | 9 | #7,921 | under 0.01 |
| 2003 | 10 | #7,032 | 0.01 |
| 2002 | 5 | #11,753 | under 0.01 |
| 2001 | 8 | #8,007 | under 0.01 |
| 2000 | 12 | #5,762 | 0.01 |
| 1999 | 8 | #7,564 | under 0.01 |
| 1998 | 10 | #6,113 | 0.01 |
| 1997 | 12 | #5,145 | 0.01 |
| 1996 | 13 | #4,776 | 0.01 |
| 1995 | 13 | #4,681 | 0.01 |
| 1994 | 10 | #5,716 | 0.01 |
| 1993 | 9 | #6,031 | under 0.01 |
| 1992 | 9 | #5,926 | under 0.01 |
| 1991 | 15 | #3,933 | 0.01 |
| 1990 | 14 | #4,099 | 0.01 |
| 1989 | 20 | #3,037 | 0.01 |
| 1988 | 15 | #3,449 | 0.01 |
| 1987 | 21 | #2,606 | 0.01 |
| 1986 | 18 | #2,845 | 0.01 |
| 1985 | 24 | #2,265 | 0.01 |
| 1984 | 16 | #2,894 | 0.01 |
| 1983 | 23 | #2,248 | 0.01 |
| 1982 | 22 | #2,308 | 0.01 |
| 1981 | 23 | #2,242 | 0.01 |
| 1980 | 26 | #2,087 | 0.01 |
| 1979 | 29 | #1,891 | 0.02 |
| 1978 | 27 | #1,901 | 0.02 |
| 1977 | 30 | #1,763 | 0.02 |
| 1976 | 44 | #1,340 | 0.03 |
| 1975 | 32 | #1,610 | 0.02 |
| 1974 | 38 | #1,401 | 0.02 |
| 1973 | 55 | #1,102 | 0.04 |
| 1972 | 54 | #1,116 | 0.03 |
| 1971 | 71 | #971 | 0.04 |
| 1970 | 114 | #773 | 0.06 |
| 1969 | 89 | #818 | 0.05 |
| 1968 | 85 | #806 | 0.05 |
| 1967 | 71 | #852 | 0.04 |
| 1966 | 71 | #868 | 0.04 |
| 1965 | 77 | #842 | 0.04 |
| 1964 | 90 | #795 | 0.05 |
| 1963 | 89 | #805 | 0.04 |
| 1962 | 94 | #788 | 0.05 |
| 1961 | 109 | #738 | 0.05 |
| 1960 | 121 | #712 | 0.06 |
| 1959 | 96 | #782 | 0.04 |
| 1958 | 119 | #689 | 0.06 |
| 1957 | 94 | #774 | 0.04 |
| 1956 | 79 | #844 | 0.04 |
| 1955 | 77 | #840 | 0.04 |
| 1954 | 70 | #882 | 0.03 |
| 1953 | 78 | #816 | 0.04 |
| 1952 | 92 | #735 | 0.05 |
| 1951 | 58 | #924 | 0.03 |
| 1950 | 66 | #840 | 0.04 |
| 1949 | 56 | #930 | 0.03 |
| 1948 | 76 | #786 | 0.04 |
| 1947 | 83 | #756 | 0.05 |
| 1946 | 65 | #815 | 0.04 |
| 1945 | 54 | #857 | 0.04 |
| 1944 | 49 | #913 | 0.04 |
| 1943 | 44 | #1,013 | 0.03 |
| 1942 | 37 | #1,129 | 0.03 |
| 1941 | 49 | #913 | 0.04 |
| 1940 | 47 | #935 | 0.04 |
| 1939 | 43 | #964 | 0.04 |
| 1938 | 38 | #1,054 | 0.03 |
| 1937 | 34 | #1,138 | 0.03 |
| 1936 | 32 | #1,176 | 0.03 |
| 1935 | 38 | #1,052 | 0.04 |
| 1934 | 34 | #1,141 | 0.03 |
| 1933 | 28 | #1,265 | 0.03 |
| 1932 | 39 | #1,082 | 0.04 |
| 1931 | 38 | #1,109 | 0.04 |
| 1930 | 36 | #1,185 | 0.03 |
| 1929 | 32 | #1,254 | 0.03 |
| 1928 | 36 | #1,203 | 0.03 |
| 1927 | 24 | #1,582 | 0.02 |
| 1926 | 28 | #1,394 | 0.03 |
| 1925 | 29 | #1,379 | 0.03 |
| 1924 | 26 | #1,515 | 0.02 |
| 1923 | 30 | #1,346 | 0.03 |
| 1922 | 32 | #1,299 | 0.03 |
| 1921 | 33 | #1,287 | 0.03 |
| 1920 | 44 | #1,060 | 0.04 |
| 1919 | 31 | #1,288 | 0.03 |
| 1918 | 34 | #1,205 | 0.03 |
| 1917 | 34 | #1,161 | 0.04 |
| 1916 | 31 | #1,193 | 0.03 |
| 1915 | 28 | #1,254 | 0.03 |
| 1914 | 20 | #1,371 | 0.03 |
| 1913 | 22 | #1,096 | 0.04 |
| 1912 | 24 | #926 | 0.06 |
| 1911 | 8 | #1,343 | 0.04 |
| 1910 | 10 | #1,084 | 0.05 |
| 1909 | 11 | #930 | 0.07 |
| 1907 | 14 | #724 | 0.10 |
| 1906 | 14 | #663 | 0.11 |
| 1905 | 11 | #774 | 0.08 |
| 1904 | 9 | #851 | 0.07 |
| 1903 | 9 | #823 | 0.08 |
| 1902 | 9 | #831 | 0.07 |
| 1900 | 10 | #876 | 0.07 |
| 1899 | 7 | #910 | 0.07 |
| 1898 | 7 | #949 | 0.06 |
| 1897 | 6 | #1,015 | 0.05 |
| 1896 | 13 | #612 | 0.11 |
| 1894 | 8 | #826 | 0.07 |
| 1893 | 6 | #976 | 0.05 |
| 1892 | 7 | #912 | 0.06 |
| 1890 | 11 | #622 | 0.10 |
| 1889 | 6 | #934 | 0.05 |
| 1888 | 10 | #677 | 0.08 |
| 1887 | 8 | #716 | 0.08 |
| 1886 | 6 | #912 | 0.05 |
| 1885 | 14 | #514 | 0.13 |
| 1884 | 10 | #641 | 0.09 |
| 1883 | 10 | #619 | 0.10 |
| 1882 | 9 | #678 | 0.08 |
| 1881 | 11 | #547 | 0.11 |
| 1880 | 7 | #780 | 0.06 |
Ranks and shares: boys’ names in each year’s SSA file; share of all boys SSA recorded that year.
Is Len a boy’s or a girl’s name?
Of the 4,616 Americans recorded as Len, 2% are girls and 98% boys. In 2025 it went to 8 boys; SSA lists no girls with it that year (fewer than 5, or none).
Years with fewer than 20 babies given the name are left blank.
Girls and boys named Len: the SSA national file counts each sex separately.
How many people are named Len, and how old are they?
2,640 alive in 2026, estimated
That is 57% of the 4,616 Americans ever recorded as Len. The median Len alive today is 61 years old; half are between 50 and 69.
The 2020 Census counted 4,593 people named Len (569 women and girls, 4,024 men and boys). SSA’s births carried forward to Census day, April 1, 2020, predict 2,895 born in the U.S. The Census count is 1.6 times that prediction. Possible reasons: the Census counts people born abroad, whom SSA’s files leave out, and it records the name people give, which SSA may have recorded under another spelling or as part of a compound name.
Alive today, by age
Alive today, by generation
| Generation | Born | Alive |
|---|---|---|
| Silent Generation | 1928-1945 | 150 |
| Baby Boomers | 1946-1964 | 1,150 |
| Generation X | 1965-1980 | 809 |
| Millennials | 1981-1996 | 251 |
| Generation Z | 1997-2012 | 157 |
| Generation Alpha | 2013-2025 | 124 |
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 Len born?
The states with the most babies named Len are California, Texas and Illinois, with 53% of its births recorded by state since 1910.
| State | Since 1910 | Rank, boys | vs. national |
|---|---|---|---|
| California | 218 | not ranked | 0.6× |
| Texas | 158 | not ranked | 0.6× |
| Illinois | 146 | not ranked | 0.6× |
| Georgia | 67 | not ranked | 0.6× |
| North Carolina | 57 | not ranked | 0.4× |
| Ohio | 48 | not ranked | 0.2× |
| Pennsylvania | 46 | not ranked | 0.2× |
| Mississippi | 38 | not ranked | 0.6× |
| Michigan | 37 | not ranked | 0.2× |
| Louisiana | 34 | not ranked | 0.4× |
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 Len 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 8 names spelled alike, given to 192,950 babies since 1880, Len is the second most given (2.4% of them). In 2025 it was given to 8 of their 2,652 babies (<1%), the fifth most given that year.
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 Len
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 Len and names like it
- Compare Len and LeonBirths, ranks, peak and the living estimate side by side.
- The most given names of the 1950sLen peaked in 1958.
- California’s most given namesThe state where SSA recorded the most babies named Len since 1910.
- The top names of 1958The year the most babies were named Len.
- The names of the Baby BoomersMost people named Len alive today were born 1946-1964.
- Names starting with LMost given first.