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% |
| * No data shown indicates the name was not among the top 1000 most popular names for that year. | ||||||