Thadeus — #10954 US boys' name

What the Data Says About Thadeus

The Social Security Administration has registered 1,117 babies named Thadeus between 1912 and 2024, spanning 113 consecutive years of U.S. birth records. As a boy's name, Thadeus currently holds the #10954 rank among boys for 2024. The name reached its historical peak in 1918, when 27 babies received it in a single year.

Decade-level aggregation shows that Thadeus performed strongest in the 2000s, accumulating 173 births during that ten-year window. Across the 12 decades of recorded activity, Thadeus shows a clear decline from its mid-century high. Geographically, the name is most concentrated in Pennsylvania, which accounts for 11 births — the largest state-level total in the dataset — followed by New York and Illinois. In total, SSA state-level files list Thadeus in 4 of the 51 U.S. reporting jurisdictions.

No etymological entry is currently available for Thadeus 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 1,117 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.