Masayo — girls' name

What the Data Says About Masayo

The Social Security Administration has registered 67 babies named Masayo between 1914 and 1928, spanning 15 consecutive years of U.S. birth records. As a girl's name, Masayo currently falls outside the top 1,000 girls' names for 1928. The name reached its historical peak in 1915, when 10 babies received it in a single year.

Decade-level aggregation shows that Masayo performed strongest in the 1910s, accumulating 47 births during that ten-year window. Across the 2 decades of recorded activity, Masayo shows notable generational variation in parental adoption. Geographically, the name is most concentrated in Hawaii, which accounts for 57 births — the largest state-level total in the dataset — followed by . In total, SSA state-level files list Masayo in 1 of the 51 U.S. reporting jurisdictions.

No etymological entry is currently available for Masayo 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.