Masuo — boys' name

What the Data Says About Masuo

The Social Security Administration has registered 35 babies named Masuo between 1917 and 1927, spanning 11 consecutive years of U.S. birth records. As a boy's name, Masuo currently falls outside the top 1,000 boys' names for 1927. The name reached its historical peak in 1920, when 11 babies received it in a single year.

Decade-level aggregation shows that Masuo performed strongest in the 1920s, accumulating 29 births during that ten-year window. Across the 2 decades of recorded activity, Masuo shows a stable profile with only moderate drift from its peak decade. Geographically, the name is most concentrated in Hawaii, which accounts for 13 births — the largest state-level total in the dataset — followed by . In total, SSA state-level files list Masuo in 1 of the 51 U.S. reporting jurisdictions.

No etymological entry is currently available for Masuo 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 35 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.