Thaddeaus — boys' name

What the Data Says About Thaddeaus

The Social Security Administration has registered 138 babies named Thaddeaus between 1918 and 2010, spanning 93 consecutive years of U.S. birth records. As a boy's name, Thaddeaus currently falls outside the top 1,000 boys' names for 2010. The name reached its historical peak in 1993, when 10 babies received it in a single year.

Decade-level aggregation shows that Thaddeaus performed strongest in the 1990s, accumulating 36 births during that ten-year window. Across the 7 decades of recorded activity, Thaddeaus shows a clear decline from its mid-century high.

No etymological entry is currently available for Thaddeaus 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 138 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.