Isidor is a rare variant of Isidro that peaked in 1914 and has grown less common since.
Isidor is a boy name. In 2025 it ranked #10,083 for boy births in the United States (and #20,817 across all names), given to 7 babies. Isidor was first reported in SSA data in 1883 and peaked in 1914 (24 births).
| Year | U.S. births | U.S. + territories | Rank |
|---|---|---|---|
| 2025 | 7 | 7 | #10,083 |
| 2024 | 8 | 8 | #9,347 |
| 2023 | 15 | 15 | #6,044 |
| 2018 | 5 | 5 | #12,927 |
| 1961 | 6 | — | #3,814 |
| 1958 | 6 | — | #3,706 |
| 1955 | 7 | — | #3,325 |
| 1954 | 8 | — | #3,051 |
| 1951 | 7 | — | #3,203 |
| 1950 | 5 | — | #3,923 |
| 1947 | 6 | — | #3,528 |
| 1938 | 5 | — | #3,765 |
| 1937 | 6 | — | #3,322 |
| 1936 | 5 | — | #3,791 |
| 1932 | 9 | — | #2,733 |
| 1931 | 6 | — | #3,578 |
| 1930 | 5 | — | #4,261 |
| 1929 | 5 | — | #4,261 |
| 1927 | 7 | — | #3,624 |
| 1925 | 11 | — | #2,664 |
| 1923 | 9 | — | #3,060 |
| 1922 | 9 | — | #3,127 |
| 1921 | 10 | — | #2,887 |
| 1920 | 16 | — | #2,088 |
| 1919 | 10 | — | #2,776 |
| 1918 | 19 | — | #1,792 |
| 1917 | 17 | — | #1,862 |
| 1916 | 20 | — | #1,619 |
| 1915 | 24 | — | #1,388 |
| 1914 | 24 | — | #1,207 |
| 1913 | 17 | — | #1,286 |
| 1912 | 18 | — | #1,118 |
| 1911 | 11 | — | #1,078 |
| 1909 | 6 | — | #1,369 |
| 1908 | 6 | — | #1,297 |
| 1906 | 5 | — | #1,329 |
| 1900 | 5 | — | #1,407 |
| 1897 | 6 | — | #1,008 |
| 1896 | 6 | — | #1,048 |
| 1894 | 6 | — | #1,016 |
| 1893 | 5 | — | #1,118 |
| 1892 | 8 | — | #830 |
| 1891 | 5 | — | #1,038 |
| 1888 | 5 | — | #1,106 |
| 1885 | 7 | — | #802 |
| 1883 | 6 | — | #843 |