How Many People Are Named Siobhan?
people named Siobhan are alive in the United States today (estimate)
About 1 in 48,199 people in the US has this name
Based on 7,399 babies named Siobhan in Social Security records from 1956 to 2025, and the share of each birth year still alive in 2025.
Popularity Rank
💎💎 Very Rare
Peak Year
282 births
Trend
Stable (last 10 years)
📖 Name Origin & Meaning
Meaning:
Irish form of Jehanne, a Norman French variant of JEANNE.
Source of the meaning, origin, pronunciation and related names: Behind the Name.
⚧ Gender Distribution
All of the babies given the name Siobhan in the records were girls.
👥 Age Distribution
The average person named Siobhan alive today is about 36 years old, and 58% are between 30 and 59. Half of them were between 25 and 46 in 2025.
📈 Popularity Over Time
Siobhan first appears in the records in 1956 and was given most often in 1980, to 282 babies. In 2025, 90 babies got the name.
Babies given the name each year, 1956 to 2025
🏆 Rank History
Siobhan has never been one of the 100 most popular girls' names. Its best rank was #629, in 1979. In 2025 it ranked #2,096.
| Girls | |
|---|---|
| Rank in 2025 | #2,096 |
| Best rank | #629 (1979) |
| Years in the top 100 | None |
| Rank in its biggest decade | #805 in the 1980s |
📍 State-Wise Distribution
People named Siobhan alive today, by the state where they were born (estimate; state records start in 1910).
More people named Siobhan were born in New York than in any other state: about 1,405 of those alive today. Compared with the national rate in the same years, Siobhan was given 7.3 times as often in Massachusetts, 4.1 times in New York and 2.8 times in New Jersey.
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