Willian — #5648 US boys' name

What the Data Says About Willian

The Social Security Administration has registered 4,054 babies named Willian between 1880 and 2024, spanning 145 consecutive years of U.S. birth records. As a boy's name, Willian currently holds the #5648 rank among boys for 2024. The name reached its historical peak in 1929, when 84 babies received it in a single year.

Decade-level aggregation shows that Willian performed strongest in the 1920s, accumulating 597 births during that ten-year window. Across the 15 decades of recorded activity, Willian shows a clear decline from its mid-century high. Geographically, the name is most concentrated in California, which accounts for 104 births — the largest state-level total in the dataset — followed by New York and Pennsylvania. In total, SSA state-level files list Willian in 16 of the 51 U.S. reporting jurisdictions.

No etymological entry is currently available for Willian 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 4,054 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.