Hiroko — girls' name

What the Data Says About Hiroko

The Social Security Administration has registered 328 babies named Hiroko between 1914 and 1992, spanning 79 consecutive years of U.S. birth records. As a girl's name, Hiroko currently falls outside the top 1,000 girls' names for 1992. The name reached its historical peak in 1919, when 19 babies received it in a single year.

Decade-level aggregation shows that Hiroko performed strongest in the 1920s, accumulating 109 births during that ten-year window. Across the 7 decades of recorded activity, Hiroko shows a clear decline from its mid-century high. Geographically, the name is most concentrated in California, which accounts for 76 births — the largest state-level total in the dataset — followed by Hawaii. In total, SSA state-level files list Hiroko in 2 of the 51 U.S. reporting jurisdictions.

No etymological entry is currently available for Hiroko 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 328 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.