Decimus — boys' name

What the Data Says About Decimus

The Social Security Administration has registered 67 babies named Decimus between 2006 and 2025, spanning 20 consecutive years of U.S. birth records. As a boy's name, Decimus currently falls outside the top 1,000 boys' names for 2025. The name reached its historical peak in 2006, when 8 babies received it in a single year.

Decade-level aggregation shows that Decimus performed strongest in the 2010s, accumulating 33 births during that ten-year window. Across the 3 decades of recorded activity, Decimus shows notable generational variation in parental adoption.

No etymological entry is currently available for Decimus 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 67 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.