Isidore
Isidore was given to 31 boys in 2025, #3,606 among boys’ names; 3,421 Americans have been recorded with it since 1881 (Social Security Administration, published May 2026).
Girls and boys together; gaps are years SSA did not record (fewer than 5 births).
Births of Isidore by year: SSA national baby-name file, 1880-2025, published May 8, 2026. SSA’s notes on the data.
What does Isidore mean?
Wiktionary, English section
Isidore is “a male given name from Ancient Greek.”
French form of the name of early Spanish saints, from Ancient Greek Ἰσίδωρος (Isídōros), meaning “gift of (the goddess) Isis”.
Meaning: Wiktionary, English section, as of Sep 25, 2026 (CC BY‑SA 4.0).
How popular is Isidore?
#3,606 among boys’ names, 2025
Isidore rose from #7,248 in 2015 to #3,606 in 2025 among boys’ names; its share of boys born rose from 5.7 to 18.1 per million.
183 babies in 1919, the peak
Isidore peaked in 1919, when 183 boys were given it, #436 among boys’ names. The 31 births of 2025 are 17% of that peak.
| Year | Births | Rank | Per 1,000 boys |
|---|---|---|---|
| 2025 | 31 | #3,606 | 0.02 |
| 2024 | 33 | #3,481 | 0.02 |
| 2023 | 34 | #3,445 | 0.02 |
| 2022 | 16 | #5,709 | 0.01 |
| 2021 | 31 | #3,602 | 0.02 |
| 2020 | 11 | #7,202 | 0.01 |
| 2019 | 20 | #4,864 | 0.01 |
| 2018 | 26 | #4,035 | 0.01 |
| 2017 | 14 | #6,146 | 0.01 |
| 2016 | 11 | #7,325 | 0.01 |
Every recorded year (122)
| Year | Births | Rank | Per 1,000 boys |
|---|---|---|---|
| 2015 | 11 | #7,248 | 0.01 |
| 2014 | 15 | #5,832 | 0.01 |
| 2013 | 13 | #6,386 | 0.01 |
| 2012 | 5 | #12,982 | under 0.01 |
| 2011 | 7 | #10,027 | under 0.01 |
| 2010 | 8 | #9,110 | under 0.01 |
| 2009 | 5 | #13,203 | under 0.01 |
| 2008 | 9 | #8,552 | under 0.01 |
| 2007 | 9 | #8,460 | under 0.01 |
| 2006 | 5 | #12,761 | under 0.01 |
| 2005 | 7 | #9,500 | under 0.01 |
| 2004 | 6 | #10,471 | under 0.01 |
| 2003 | 7 | #9,031 | under 0.01 |
| 2002 | 10 | #6,719 | 0.01 |
| 2000 | 6 | #9,545 | under 0.01 |
| 1999 | 5 | #10,542 | under 0.01 |
| 1996 | 5 | #9,579 | under 0.01 |
| 1992 | 6 | #7,835 | under 0.01 |
| 1991 | 5 | #8,719 | under 0.01 |
| 1990 | 9 | #5,543 | under 0.01 |
| 1988 | 5 | #7,734 | under 0.01 |
| 1985 | 7 | #5,385 | under 0.01 |
| 1981 | 8 | #4,698 | under 0.01 |
| 1978 | 6 | #5,344 | under 0.01 |
| 1977 | 5 | #6,241 | under 0.01 |
| 1976 | 6 | #5,206 | under 0.01 |
| 1972 | 6 | #4,664 | under 0.01 |
| 1970 | 8 | #3,646 | under 0.01 |
| 1969 | 7 | #3,741 | under 0.01 |
| 1968 | 7 | #3,497 | under 0.01 |
| 1967 | 11 | #2,538 | 0.01 |
| 1965 | 8 | #3,095 | under 0.01 |
| 1964 | 6 | #3,797 | under 0.01 |
| 1963 | 5 | #4,304 | under 0.01 |
| 1962 | 20 | #1,831 | 0.01 |
| 1961 | 16 | #2,097 | 0.01 |
| 1960 | 18 | #1,941 | 0.01 |
| 1959 | 10 | #2,723 | under 0.01 |
| 1958 | 13 | #2,311 | 0.01 |
| 1957 | 10 | #2,730 | under 0.01 |
| 1956 | 12 | #2,426 | 0.01 |
| 1955 | 15 | #2,087 | 0.01 |
| 1954 | 14 | #2,156 | 0.01 |
| 1953 | 19 | #1,790 | 0.01 |
| 1952 | 13 | #2,203 | 0.01 |
| 1951 | 20 | #1,699 | 0.01 |
| 1950 | 9 | #2,665 | 0.01 |
| 1949 | 14 | #2,065 | 0.01 |
| 1948 | 12 | #2,269 | 0.01 |
| 1947 | 10 | #2,577 | 0.01 |
| 1946 | 8 | #2,795 | under 0.01 |
| 1945 | 9 | #2,481 | 0.01 |
| 1944 | 10 | #2,378 | 0.01 |
| 1943 | 15 | #1,945 | 0.01 |
| 1942 | 7 | #3,070 | 0.01 |
| 1941 | 9 | #2,560 | 0.01 |
| 1940 | 7 | #3,000 | 0.01 |
| 1939 | 16 | #1,755 | 0.01 |
| 1938 | 12 | #2,128 | 0.01 |
| 1937 | 16 | #1,793 | 0.02 |
| 1936 | 13 | #2,005 | 0.01 |
| 1935 | 14 | #1,981 | 0.01 |
| 1934 | 16 | #1,811 | 0.02 |
| 1933 | 13 | #2,039 | 0.01 |
| 1932 | 12 | #2,249 | 0.01 |
| 1931 | 29 | #1,297 | 0.03 |
| 1930 | 39 | #1,126 | 0.04 |
| 1929 | 32 | #1,250 | 0.03 |
| 1928 | 56 | #896 | 0.05 |
| 1927 | 38 | #1,169 | 0.03 |
| 1926 | 60 | #865 | 0.05 |
| 1925 | 77 | #752 | 0.07 |
| 1924 | 96 | #659 | 0.08 |
| 1923 | 102 | #637 | 0.09 |
| 1922 | 128 | #561 | 0.12 |
| 1921 | 130 | #547 | 0.12 |
| 1920 | 130 | #535 | 0.12 |
| 1919 | 183 | #436 | 0.19 |
| 1918 | 171 | #454 | 0.17 |
| 1917 | 174 | #430 | 0.19 |
| 1916 | 179 | #419 | 0.20 |
| 1915 | 182 | #399 | 0.21 |
| 1914 | 156 | #379 | 0.24 |
| 1913 | 115 | #402 | 0.22 |
| 1912 | 101 | #383 | 0.23 |
| 1911 | 53 | #393 | 0.23 |
| 1910 | 43 | #410 | 0.22 |
| 1909 | 28 | #492 | 0.17 |
| 1908 | 32 | #425 | 0.21 |
| 1907 | 16 | #648 | 0.11 |
| 1906 | 17 | #576 | 0.13 |
| 1905 | 10 | #817 | 0.08 |
| 1904 | 16 | #578 | 0.12 |
| 1903 | 11 | #717 | 0.09 |
| 1902 | 9 | #824 | 0.07 |
| 1901 | 5 | #1,129 | 0.05 |
| 1900 | 15 | #661 | 0.10 |
| 1899 | 14 | #529 | 0.13 |
| 1898 | 7 | #933 | 0.06 |
| 1897 | 9 | #757 | 0.08 |
| 1896 | 10 | #751 | 0.08 |
| 1895 | 8 | #833 | 0.07 |
| 1894 | 8 | #820 | 0.07 |
| 1893 | 8 | #797 | 0.07 |
| 1892 | 8 | #830 | 0.07 |
| 1889 | 7 | #842 | 0.06 |
| 1888 | 5 | #1,106 | 0.04 |
| 1887 | 6 | #870 | 0.06 |
| 1886 | 5 | #1,034 | 0.05 |
| 1884 | 5 | #1,047 | 0.04 |
| 1882 | 5 | #1,013 | 0.04 |
| 1881 | 6 | #827 | 0.06 |
Ranks and shares: boys’ names in each year’s SSA file; share of all boys SSA recorded that year.
Is Isidore a boy’s or a girl’s name?
Isidore has been recorded only for boys: SSA lists no girls with the name in 122 years of records (it lists a name only in years with 5 or more babies of a sex).
Girls and boys named Isidore: the SSA national file counts each sex separately.
How many people are named Isidore, and how old are they?
An estimated 656 Americans named Isidore and born in the U.S. are alive in 2026 (19% of everyone recorded); the median is 23 years old and half are between 7 and 66. An estimate from SSA’s births and life tables, not a count.
The 2020 Census counted 796 people named Isidore (24 women and girls, 772 men and boys). SSA’s births carried forward to Census day, April 1, 2020, predict 591 born in the U.S. The Census count is 35% above 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.
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 Isidore born?
The states with the most babies named Isidore are New York, Pennsylvania and Massachusetts, with 99% of its births recorded by state since 1910; Massachusetts is not among the ten states with the most births.
| State | Since 1910 | Rank, boys | vs. national |
|---|---|---|---|
| New York | 1,861 | not ranked | 6.3× |
| Pennsylvania | 36 | not ranked | 0.1× |
| Massachusetts | 6 | not ranked | 0.1× |
| Maryland | 5 | not ranked | 0.1× |
| Texas | 5 | not ranked | 0.0× |
Where Isidore is more common than its national share predicts
Relative to its national share, Isidore is most over-represented in New York: since 1910 it was given 6.3 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 Isidore 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 4 names spelled alike, given to 18,833 babies since 1880, Isidore is the third most given (18% of them). In 2025 it was given to 31 of their 134 babies (23%), 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 Isidore
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 Isidore and names like it
- Compare Isidore and IsidroBirths, ranks, peak and the living estimate side by side.
- The most given names of the 1910sIsidore peaked in 1919.
- New York’s most given namesThe state where SSA recorded the most babies named Isidore since 1910.
- Ancient Greek namesWiktionary’s origin for Isidore: every such name, by how often it is given.
- The top names of 1919The year the most babies were named Isidore.
- The names of Generation AlphaMost people named Isidore alive today were born 2013-2025.
- Names starting with IMost given first.