Isao — boys' name

What the Data Says About Isao

The Social Security Administration has registered 246 babies named Isao between 1915 and 2016, spanning 102 consecutive years of U.S. birth records. As a boy's name, Isao currently falls outside the top 1,000 boys' names for 2016. The name reached its historical peak in 1925, when 20 babies received it in a single year.

Decade-level aggregation shows that Isao performed strongest in the 1920s, accumulating 128 births during that ten-year window. Across the 5 decades of recorded activity, Isao shows a clear decline from its mid-century high. Geographically, the name is most concentrated in Hawaii, which accounts for 87 births — the largest state-level total in the dataset — followed by California. In total, SSA state-level files list Isao in 2 of the 51 U.S. reporting jurisdictions.

No etymological entry is currently available for Isao 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 246 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.