Isadore
Isadore was given to 15 boys in 2025, #5,960 among boys’ names; 5,909 Americans have been recorded with it since 1880 (Social Security Administration, published May 2026).
An estimated 1,090 Americans named Isadore and born in the U.S. are alive in 2026 (19% of everyone recorded); the median is 53 years old and half are between 21 and 71.
Girls and boys together; gaps are years SSA did not record (fewer than 5 births).
Births of Isadore by year: SSA national baby-name file, 1880-2025, published May 8, 2026. SSA’s notes on the data.
What does Isadore mean?
Wiktionary, English section
Isadore is “a male given name from Ancient Greek.”
A non-standard variant of Isidore, possibly inspired by the well-known feminine variant Isadora of Isidora.
/ˈɪzədɔɹ/
Meaning: Wiktionary, English section, as of Sep 25, 2026 (CC BY‑SA 4.0).
How popular is Isadore?
#5,960 among boys’ names, 2025
Isadore rose from #7,699 in 2015 to #5,960 in 2025 among boys’ names; its share of boys born rose from 5.2 to 8.8 per million.
285 babies in 1916, the peak
Isadore peaked in 1916, when 285 babies were given it (273 boys, #318 among boys’ names). The 15 births of 2025 are 5% of that peak.
Births by sex.
| Year | Births | Rank | Per 1,000 boys |
|---|---|---|---|
| 2025 | 15 | #5,960 | 0.01 |
| 2024 | 9 | #8,594 | 0.01 |
| 2023 | 10 | #7,932 | 0.01 |
| 2022 | 12 | #6,976 | 0.01 |
| 2021 | 19 | #4,995 | 0.01 |
| 2020 | 19 | #4,924 | 0.01 |
| 2019 | 15 | #5,925 | 0.01 |
| 2018 | 10 | #7,814 | 0.01 |
| 2017 | 13 | #6,453 | 0.01 |
| 2016 | 13 | #6,487 | 0.01 |
Every recorded year (143)
| Year | Births | Rank | Per 1,000 boys |
|---|---|---|---|
| 2015 | 10 | #7,699 | 0.01 |
| 2014 | 10 | #7,777 | 0.01 |
| 2013 | 9 | #8,363 | under 0.01 |
| 2011 | 7 | #10,017 | under 0.01 |
| 2010 | 8 | #9,107 | under 0.01 |
| 2009 | 9 | #8,561 | under 0.01 |
| 2008 | 14 | #6,197 | 0.01 |
| 2007 | 9 | #8,456 | under 0.01 |
| 2006 | 8 | #9,026 | under 0.01 |
| 2005 | 9 | #7,884 | under 0.01 |
| 2004 | 8 | #8,426 | under 0.01 |
| 2003 | 9 | #7,475 | under 0.01 |
| 2002 | 12 | #5,851 | 0.01 |
| 2001 | 6 | #9,728 | under 0.01 |
| 2000 | 8 | #7,723 | under 0.01 |
| 1999 | 11 | #5,789 | 0.01 |
| 1998 | 11 | #5,606 | 0.01 |
| 1997 | 11 | #5,415 | 0.01 |
| 1996 | 9 | #6,177 | under 0.01 |
| 1994 | 6 | #8,157 | under 0.01 |
| 1993 | 7 | #7,105 | under 0.01 |
| 1992 | 7 | #6,953 | under 0.01 |
| 1991 | 11 | #4,892 | 0.01 |
| 1990 | 9 | #5,540 | under 0.01 |
| 1989 | 14 | #3,890 | 0.01 |
| 1988 | 12 | #4,010 | 0.01 |
| 1987 | 12 | #3,824 | 0.01 |
| 1986 | 11 | #3,975 | 0.01 |
| 1985 | 7 | #5,383 | under 0.01 |
| 1984 | 6 | #5,872 | under 0.01 |
| 1983 | 6 | #5,767 | under 0.01 |
| 1981 | 11 | #3,702 | 0.01 |
| 1980 | 11 | #3,711 | 0.01 |
| 1979 | 12 | #3,436 | 0.01 |
| 1978 | 19 | #2,416 | 0.01 |
| 1977 | 10 | #3,704 | 0.01 |
| 1976 | 8 | #4,168 | 0.01 |
| 1975 | 11 | #3,320 | 0.01 |
| 1974 | 11 | #3,209 | 0.01 |
| 1973 | 17 | #2,349 | 0.01 |
| 1972 | 15 | #2,475 | 0.01 |
| 1971 | 12 | #2,882 | 0.01 |
| 1970 | 16 | #2,338 | 0.01 |
| 1969 | 11 | #2,765 | 0.01 |
| 1968 | 16 | #2,066 | 0.01 |
| 1967 | 13 | #2,286 | 0.01 |
| 1966 | 18 | #1,848 | 0.01 |
| 1965 | 16 | #2,029 | 0.01 |
| 1964 | 14 | #2,254 | 0.01 |
| 1963 | 25 | #1,604 | 0.01 |
| 1962 | 22 | #1,728 | 0.01 |
| 1961 | 17 | #2,032 | 0.01 |
| 1960 | 18 | #1,940 | 0.01 |
| 1959 | 20 | #1,833 | 0.01 |
| 1958 | 24 | #1,613 | 0.01 |
| 1957 | 34 | #1,354 | 0.02 |
| 1956 | 29 | #1,461 | 0.01 |
| 1955 | 30 | #1,406 | 0.01 |
| 1954 | 25 | #1,537 | 0.01 |
| 1953 | 24 | #1,563 | 0.01 |
| 1952 | 38 | #1,202 | 0.02 |
| 1951 | 23 | #1,573 | 0.01 |
| 1950 | 24 | #1,515 | 0.01 |
| 1949 | 31 | #1,310 | 0.02 |
| 1948 | 22 | #1,583 | 0.01 |
| 1947 | 31 | #1,330 | 0.02 |
| 1946 | 25 | #1,424 | 0.02 |
| 1945 | 31 | #1,191 | 0.02 |
| 1944 | 23 | #1,417 | 0.02 |
| 1943 | 30 | #1,269 | 0.02 |
| 1942 | 30 | #1,286 | 0.02 |
| 1941 | 39 | #1,041 | 0.03 |
| 1940 | 33 | #1,169 | 0.03 |
| 1939 | 35 | #1,093 | 0.03 |
| 1938 | 38 | #1,053 | 0.03 |
| 1937 | 35 | #1,107 | 0.03 |
| 1936 | 41 | #984 | 0.04 |
| 1935 | 57 | #825 | 0.05 |
| 1934 | 28 | #1,282 | 0.03 |
| 1933 | 41 | #1,006 | 0.04 |
| 1932 | 44 | #998 | 0.04 |
| 1931 | 64 | #786 | 0.06 |
| 1930 | 60 | #849 | 0.05 |
| 1929 | 59 | #863 | 0.05 |
| 1928 | 66 | #809 | 0.06 |
| 1927 | 89 | #688 | 0.08 |
| 1926 | 101 | #624 | 0.09 |
| 1925 | 141 | #513 | 0.13 |
| 1924 | 154 | #501 | 0.14 |
| 1923 | 162 | #480 | 0.15 |
| 1922 | 182 | #459 | 0.17 |
| 1921 | 212 | #417 | 0.19 |
| 1920 | 198 | #426 | 0.19 |
| 1919 | 225 | #389 | 0.23 |
| 1918 | 243 | #384 | 0.24 |
| 1917 | 243 | #358 | 0.26 |
| 1916 | 273 | #318 | 0.31 |
| 1915 | 265 | #322 | 0.31 |
| 1914 | 242 | #287 | 0.37 |
| 1913 | 200 | #274 | 0.39 |
| 1912 | 148 | #295 | 0.34 |
| 1911 | 87 | #283 | 0.39 |
| 1910 | 54 | #342 | 0.28 |
| 1909 | 46 | #346 | 0.28 |
| 1908 | 52 | #303 | 0.34 |
| 1907 | 49 | #306 | 0.33 |
| 1906 | 49 | #291 | 0.37 |
| 1905 | 21 | #499 | 0.16 |
| 1904 | 31 | #364 | 0.24 |
| 1903 | 31 | #347 | 0.26 |
| 1902 | 24 | #419 | 0.20 |
| 1901 | 23 | #395 | 0.22 |
| 1900 | 24 | #474 | 0.16 |
| 1899 | 15 | #513 | 0.14 |
| 1898 | 14 | #590 | 0.11 |
| 1897 | 15 | #531 | 0.13 |
| 1896 | 25 | #393 | 0.21 |
| 1895 | 19 | #464 | 0.16 |
| 1894 | 19 | #448 | 0.16 |
| 1893 | 23 | #376 | 0.20 |
| 1892 | 17 | #488 | 0.14 |
| 1891 | 13 | #511 | 0.13 |
| 1890 | 14 | #522 | 0.13 |
| 1889 | 10 | #647 | 0.09 |
| 1888 | 12 | #592 | 0.10 |
| 1887 | 12 | #530 | 0.12 |
| 1886 | 10 | #622 | 0.09 |
| 1885 | 10 | #622 | 0.09 |
| 1884 | 8 | #729 | 0.07 |
| 1883 | 9 | #665 | 0.09 |
| 1882 | 5 | #1,012 | 0.04 |
| 1881 | 8 | #674 | 0.08 |
| 1880 | 9 | #658 | 0.08 |
Ranks and shares: boys’ names in each year’s SSA file; share of all boys SSA recorded that year.
Is Isadore a boy’s or a girl’s name?
Of the 5,909 Americans recorded as Isadore, 3% are girls and 97% boys. In 2025 it went to 15 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 Isadore: the SSA national file counts each sex separately.
How many people are named Isadore, and how old are they?
1,090 alive in 2026, estimated
That is 19% of the 5,909 Americans ever recorded as Isadore. The median Isadore alive today is 53 years old; half are between 21 and 71.
The 2020 Census counted 1,120 people named Isadore (84 women and girls, 1,036 men and boys). SSA’s births carried forward to Census day, April 1, 2020, predict 1,193 born in the U.S. The Census count is 6% below that prediction.
Alive today, by age
Alive today, by generation
| Generation | Born | Alive |
|---|---|---|
| Silent Generation | 1928-1945 | 121 |
| Baby Boomers | 1946-1964 | 309 |
| Generation X | 1965-1980 | 190 |
| Millennials | 1981-1996 | 122 |
| Generation Z | 1997-2012 | 138 |
| Generation Alpha | 2013-2025 | 211 |
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 Isadore born?
The states with the most babies named Isadore are Pennsylvania, New York and Illinois, with 57% of its births recorded by state since 1910.
| State | Since 1910 | Rank, boys | vs. national |
|---|---|---|---|
| Pennsylvania | 674 | not ranked | 1.6× |
| New York | 657 | not ranked | 1.3× |
| Illinois | 258 | not ranked | 0.9× |
| New Jersey | 187 | not ranked | 1.1× |
| Massachusetts | 179 | not ranked | 1.0× |
| Michigan | 142 | not ranked | 0.7× |
| Ohio | 129 | not ranked | 0.5× |
| Louisiana | 88 | not ranked | 0.8× |
| Maryland | 74 | not ranked | 0.9× |
| South Carolina | 53 | not ranked | 0.5× |
Where Isadore is more common than its national share predicts
Relative to its national share, Isadore is most over-represented in Pennsylvania: since 1910 it was given 1.6 times as often there as its national share each year would predict.
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 Isadore 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 10,622 babies since 1880, Isadore is the most given (56% of them). In 2025 it was given to 15 of their 46 babies (33%), the second 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 Isadore
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 Isadore and names like it
- Compare Isadore and IsidoreBirths, ranks, peak and the living estimate side by side.
- The most given names of the 1910sIsadore peaked in 1916.
- Pennsylvania’s most given namesThe state where SSA recorded the most babies named Isadore since 1910.
- Ancient Greek namesWiktionary’s origin for Isadore: every such name, by how often it is given.
- The top names of 1916The year the most babies were named Isadore.
- The names of the Baby BoomersMost people named Isadore alive today were born 1946-1964.
- Names starting with IMost given first.