Willliam — boys' name

What the Data Says About Willliam

The Social Security Administration has registered 266 babies named Willliam between 1922 and 2021, spanning 100 consecutive years of U.S. birth records. As a boy's name, Willliam currently falls outside the top 1,000 boys' names for 2021. The name reached its historical peak in 2006, when 12 babies received it in a single year.

Decade-level aggregation shows that Willliam performed strongest in the 2000s, accumulating 65 births during that ten-year window. Across the 10 decades of recorded activity, Willliam shows a clear decline from its mid-century high.

No etymological entry is currently available for Willliam 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 266 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.