Masako — girls' name

What the Data Says About Masako

The Social Security Administration has registered 821 babies named Masako between 1909 and 1993, spanning 85 consecutive years of U.S. birth records. As a girl's name, Masako currently falls outside the top 1,000 girls' names for 1993. The name reached its historical peak in 1921, when 58 babies received it in a single year.

Decade-level aggregation shows that Masako performed strongest in the 1920s, accumulating 386 births during that ten-year window. Across the 7 decades of recorded activity, Masako shows a clear decline from its mid-century high. Geographically, the name is most concentrated in Hawaii, which accounts for 349 births — the largest state-level total in the dataset — followed by California and Washington. In total, SSA state-level files list Masako in 3 of the 51 U.S. reporting jurisdictions.

No etymological entry is currently available for Masako 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 821 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.