Kazuo — boys' name

What the Data Says About Kazuo

The Social Security Administration has registered 757 babies named Kazuo between 1911 and 2009, spanning 99 consecutive years of U.S. birth records. As a boy's name, Kazuo currently falls outside the top 1,000 boys' names for 2009. The name reached its historical peak in 1921, when 57 babies received it in a single year.

Decade-level aggregation shows that Kazuo performed strongest in the 1920s, accumulating 375 births during that ten-year window. Across the 5 decades of recorded activity, Kazuo shows a clear decline from its mid-century high. Geographically, the name is most concentrated in Hawaii, which accounts for 299 births — the largest state-level total in the dataset — followed by California and Washington. In total, SSA state-level files list Kazuo in 3 of the 51 U.S. reporting jurisdictions.

No etymological entry is currently available for Kazuo 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 757 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.