Tadeusz — #12394 US boys' name

What the Data Says About Tadeusz

The Social Security Administration has registered 423 babies named Tadeusz between 1912 and 2024, spanning 113 consecutive years of U.S. birth records. As a boy's name, Tadeusz currently holds the #12394 rank among boys for 2024. The name reached its historical peak in 1917, when 26 babies received it in a single year.

Decade-level aggregation shows that Tadeusz performed strongest in the 1910s, accumulating 101 births during that ten-year window. Across the 11 decades of recorded activity, Tadeusz shows notable generational variation in parental adoption. Geographically, the name is most concentrated in Massachusetts, which accounts for 11 births — the largest state-level total in the dataset — followed by Ohio. In total, SSA state-level files list Tadeusz in 2 of the 51 U.S. reporting jurisdictions.

No etymological entry is currently available for Tadeusz 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 423 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.