The baby name Isidoro appears in baby name data for the United States from 1917 to 2008. It was most popular in 1947 with 45 babies given the name.
Over the period shown, Isidoro has stayed at a similar level of popularity.
| Year | Count |
|---|---|
| 1917 | 6 |
| 1918 | 6 |
| 1923 | 17 |
| 1925 | 9 |
| 1926 | 9 |
| 1927 | 7 |
| 1928 | 8 |
| 1929 | 13 |
| 1930 | 9 |
| 1938 | 5 |
| 1939 | 8 |
| 1940 | 7 |
| 1941 | 6 |
| 1942 | 7 |
| 1946 | 6 |
| 1947 | 45 |
| 1948 | 10 |
| 1949 | 6 |
| 1955 | 24 |
| 1957 | 12 |
| 1958 | 10 |
| 1959 | 10 |
| 1960 | 14 |
| 1963 | 12 |
| 1964 | 12 |
| 1966 | 23 |
| 1967 | 10 |
| 1968 | 12 |
| 1971 | 9 |
| 1972 | 11 |
| 1973 | 7 |
| 1976 | 8 |
| 1977 | 7 |
| 1980 | 5 |
| 1981 | 6 |
| 1982 | 7 |
| 1983 | 15 |
| 1985 | 8 |
| 1986 | 6 |
| 1990 | 6 |
| 1996 | 5 |
| 1997 | 5 |
| 1999 | 6 |
| 2000 | 6 |
| 2006 | 5 |
| 2008 | 18 |