Obrien — boys' name

What the Data Says About Obrien

The Social Security Administration has registered 209 babies named Obrien between 1921 and 2022, spanning 102 consecutive years of U.S. birth records. As a boy's name, Obrien currently falls outside the top 1,000 boys' names for 2022. The name reached its historical peak in 1991, when 16 babies received it in a single year.

Decade-level aggregation shows that Obrien performed strongest in the 1980s, accumulating 66 births during that ten-year window. Across the 8 decades of recorded activity, Obrien shows a clear decline from its mid-century high.

No etymological entry is currently available for Obrien 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 209 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.