Kotaro — boys' name

What the Data Says About Kotaro

The Social Security Administration has registered 194 babies named Kotaro between 1919 and 2023, spanning 105 consecutive years of U.S. birth records. As a boy's name, Kotaro currently falls outside the top 1,000 boys' names for 2023. The name reached its historical peak in 2010, when 15 babies received it in a single year.

Decade-level aggregation shows that Kotaro performed strongest in the 2000s, accumulating 73 births during that ten-year window. Across the 5 decades of recorded activity, Kotaro shows a clear decline from its mid-century high. Geographically, the name is most concentrated in California, which accounts for 12 births — the largest state-level total in the dataset — followed by Hawaii. In total, SSA state-level files list Kotaro in 2 of the 51 U.S. reporting jurisdictions.

No etymological entry is currently available for Kotaro 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 194 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.