Thadius — #9993 US boys' name

What the Data Says About Thadius

The Social Security Administration has registered 511 babies named Thadius between 1922 and 2024, spanning 103 consecutive years of U.S. birth records. As a boy's name, Thadius currently holds the #9993 rank among boys for 2024. The name reached its historical peak in 1974, when 19 babies received it in a single year.

Decade-level aggregation shows that Thadius performed strongest in the 1970s, accumulating 118 births during that ten-year window. Across the 9 decades of recorded activity, Thadius shows a clear decline from its mid-century high.

No etymological entry is currently available for Thadius 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 511 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.