Iwao — boys' name

What the Data Says About Iwao

The Social Security Administration has registered 178 babies named Iwao between 1914 and 1936, spanning 23 consecutive years of U.S. birth records. As a boy's name, Iwao currently falls outside the top 1,000 boys' names for 1936. The name reached its historical peak in 1921, when 20 babies received it in a single year.

Decade-level aggregation shows that Iwao performed strongest in the 1920s, accumulating 109 births during that ten-year window. Across the 3 decades of recorded activity, Iwao shows a clear decline from its mid-century high. Geographically, the name is most concentrated in Hawaii, which accounts for 66 births — the largest state-level total in the dataset — followed by California. In total, SSA state-level files list Iwao in 2 of the 51 U.S. reporting jurisdictions.

No etymological entry is currently available for Iwao 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 178 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.