Hisako — girls' name

What the Data Says About Hisako

The Social Security Administration has registered 368 babies named Hisako between 1909 and 1938, spanning 30 consecutive years of U.S. birth records. As a girl's name, Hisako currently falls outside the top 1,000 girls' names for 1938. The name reached its historical peak in 1923, when 30 babies received it in a single year.

Decade-level aggregation shows that Hisako performed strongest in the 1920s, accumulating 213 births during that ten-year window. Across the 4 decades of recorded activity, Hisako shows a clear decline from its mid-century high. Geographically, the name is most concentrated in California, which accounts for 136 births — the largest state-level total in the dataset — followed by Hawaii. In total, SSA state-level files list Hisako in 2 of the 51 U.S. reporting jurisdictions.

No etymological entry is currently available for Hisako 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 368 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.