Siobhan — #1922 US girls' name

What the Data Says About Siobhan

The Social Security Administration has registered 7,310 babies named Siobhan between 1956 and 2024, spanning 69 consecutive years of U.S. birth records. As a girl's name, Siobhan currently holds the #1922 rank among girls for 2024. The name reached its historical peak in 1980, when 282 babies received it in a single year.

Decade-level aggregation shows that Siobhan performed strongest in the 1980s, accumulating 2,086 births during that ten-year window. Across the 8 decades of recorded activity, Siobhan shows a clear decline from its mid-century high. Geographically, the name is most concentrated in New York, which accounts for 1,473 births — the largest state-level total in the dataset — followed by Massachusetts and California. In total, SSA state-level files list Siobhan in 23 of the 51 U.S. reporting jurisdictions.

No etymological entry is currently available for Siobhan in our reference dataset. These figures derive from SSA's annual national and state-level name files, which include any name appearing at least five times in a given year or state-year; names below that threshold are suppressed for privacy and therefore excluded from the totals shown here. The 7,310 total represents a lower bound — actual usage may be higher in years or states where the count fell below the disclosure floor. This page is provided for informational and research purposes only and does not constitute personal, legal, or naming advice.