Siobhan vs Sione
American parents have registered 7,399 Siobhans since 1880, against 1,510 Siones. Siobhan is still ahead, with 90 babies in 2025.
Babies given each name, 1880–2025
Siobhan Sione
Each line is every baby given the name that year, girls and boys added together — the only count that means the same thing for both names. A line breaks where the name fell below five babies in a year — the point at which the SSA stops publishing it — rather than being drawn through a figure nobody published. A single published year in a gap shows as a dot.
Who was ahead
Of the 70 years in which either name was published, Siobhan for 69 years and Sione for 1 year. The lead changed hands 2 times.
Side by side
| Siobhan | Sione | |
|---|---|---|
| Total US births | 7,399 | 1,510 |
| Most in one year | 282 | 53 |
| Babies in 2025 | 90 | 33 |
| Estimated living today | 7,100 | 1,500 |
| Median age today | 38 | 20 |
| Peak year | 1980 | 2017 |
| Best rank | 646th girls | 2,493rd boys |
| Rank in 2025 | 2,076th | 3,450th |
| First recorded | 1956 | 1973 |
| Girls / boys | 7,399 / 0 | 6 / 1,504 |
A rank is a position within one sex’s list for one year, so the two rank rows are not subtracted from one another and the winning column is not marked on them. The living figure is a life-table estimate, not a count.
Which name is older
Half of the Siobhans alive today are over 38; half the Siones are over 20. That is 18 years between them: two names in use at the same time, worn by two different generations.
Where each one is strongest
- Siobhan Massachusetts (6.6×), New York (3.9×), New Jersey (2.8×)
- Sione Hawaii (39.5×), Utah (39.2×), California (5.4×)
How much commoner the name is in that state than it is nationally, from births recorded since 1910.
Compare something else
Related comparisons
Social Security Administration birth records, 1880–2025, public domain. Full histories: Siobhan and Sione.