Masaichi — boys' name

What the Data Says About Masaichi

The Social Security Administration has registered 159 babies named Masaichi between 1912 and 1933, spanning 22 consecutive years of U.S. birth records. As a boy's name, Masaichi currently falls outside the top 1,000 boys' names for 1933. The name reached its historical peak in 1918, when 21 babies received it in a single year.

Decade-level aggregation shows that Masaichi performed strongest in the 1920s, accumulating 78 births during that ten-year window. Across the 3 decades of recorded activity, Masaichi shows a clear decline from its mid-century high. Geographically, the name is most concentrated in Hawaii, which accounts for 136 births — the largest state-level total in the dataset — followed by . In total, SSA state-level files list Masaichi in 1 of the 51 U.S. reporting jurisdictions.

No etymological entry is currently available for Masaichi 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 159 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.