Seiichi — boys' name

What the Data Says About Seiichi

The Social Security Administration has registered 40 babies named Seiichi between 1919 and 1926, spanning 8 consecutive years of U.S. birth records. As a boy's name, Seiichi currently falls outside the top 1,000 boys' names for 1926. The name reached its historical peak in 1919, when 8 babies received it in a single year.

Decade-level aggregation shows that Seiichi performed strongest in the 1920s, accumulating 32 births during that ten-year window. Across the 2 decades of recorded activity, Seiichi shows a stable profile with only moderate drift from its peak decade. Geographically, the name is most concentrated in California, which accounts for 5 births — the largest state-level total in the dataset — followed by Hawaii. In total, SSA state-level files list Seiichi in 2 of the 51 U.S. reporting jurisdictions.

No etymological entry is currently available for Seiichi 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 40 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.