Mamoru — boys' name

What the Data Says About Mamoru

The Social Security Administration has registered 182 babies named Mamoru between 1915 and 1937, spanning 23 consecutive years of U.S. birth records. As a boy's name, Mamoru currently falls outside the top 1,000 boys' names for 1937. The name reached its historical peak in 1924, when 16 babies received it in a single year.

Decade-level aggregation shows that Mamoru performed strongest in the 1920s, accumulating 116 births during that ten-year window. Across the 3 decades of recorded activity, Mamoru shows a clear decline from its mid-century high. Geographically, the name is most concentrated in Hawaii, which accounts for 106 births — the largest state-level total in the dataset — followed by California. In total, SSA state-level files list Mamoru in 2 of the 51 U.S. reporting jurisdictions.

No etymological entry is currently available for Mamoru 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 182 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.