Isobel: Statistics About The Baby Name Isobel
| Year | Boy Rank | # Boys | % Boys | Girl Rank | # Girls | % Girls |
| 1921 | - | - | - | 976 | 58 | 0.0045% |
| 1916 | - | - | - | 816 | 69 | 0.0064% |
| 1914 | - | - | - | 910 | 42 | 0.0053% |
| 1912 | - | - | - | 850 | 35 | 0.0060% |
| 1908 | - | - | - | 863 | 21 | 0.0059% |
| 1906 | - | - | - | 885 | 18 | 0.0057% |
| 1905 | - | - | - | 910 | 17 | 0.0055% |
| 1903 | - | - | - | 999 | 13 | 0.0047% |