Siobhan
Quick answers about Siobhan
How many people are named Siobhan?
An estimated 6,908 living Americans are named Siobhan.
How rare is Siobhan?
Siobhan is uncommon among babies today, with 90 girls receiving the name in 2025, down 68.1% from its 1980 peak.
How old is the typical Siobhan?
The median age of a living American named Siobhan is approximately 39 years, with most bearers falling between 26 and 47 years old.
Is Siobhan still popular?
Yes — Siobhan is currently rising in popularity, with 90 births in 2025. Births this decade are running about 1.2× higher than the previous decade.
Where is Siobhan most common?
Siobhan has its strongest geographic signal in Massachusetts, where it appears 8.6× more often than the national baseline.
Siobhan is most concentrated in Massachusetts — about 8.6× the national rate in the 2000s.
States where Siobhan is given more often than the national average — its present-day heartland.