Siobhan: Statistics About The Baby Name Siobhan
| Year | Boy Rank | # Boys | % Boys | Girl Rank | # Girls | % Girls |
| 1987 | * | * | * | 913 | 182 | 0.0097% |
| 1986 | * | * | * | 871 | 191 | 0.0104% |
| 1985 | * | * | * | 743 | 233 | 0.0126% |
| 1984 | * | * | * | 727 | 226 | 0.0126% |
| 1983 | * | * | * | 785 | 203 | 0.0114% |
| 1982 | * | * | * | 740 | 228 | 0.0126% |
| 1981 | * | * | * | 763 | 214 | 0.0120% |
| 1980 | * | * | * | 652 | 281 | 0.0158% |
| 1979 | * | * | * | 630 | 278 | 0.0162% |
| * No data shown indicates the name was not among the top 1000 most popular names for that year. | ||||||