Oisin — #4142 US boys' name

What the Data Says About Oisin

The Social Security Administration has registered 491 babies named Oisin between 1991 and 2024, spanning 34 consecutive years of U.S. birth records. As a boy's name, Oisin currently holds the #4142 rank among boys for 2024. The name reached its historical peak in 2020, when 31 babies received it in a single year.

Decade-level aggregation shows that Oisin performed strongest in the 2010s, accumulating 181 births during that ten-year window. Across the 4 decades of recorded activity, Oisin shows a stable profile with only moderate drift from its peak decade. Geographically, the name is most concentrated in New York, which accounts for 29 births — the largest state-level total in the dataset — followed by California and Massachusetts. In total, SSA state-level files list Oisin in 3 of the 51 U.S. reporting jurisdictions.

No etymological entry is currently available for Oisin 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 491 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.