Gilliam — boys' name

What the Data Says About Gilliam

The Social Security Administration has registered 147 babies named Gilliam between 1914 and 1988, spanning 75 consecutive years of U.S. birth records. As a boy's name, Gilliam currently falls outside the top 1,000 boys' names for 1988. The name reached its historical peak in 1920, when 9 babies received it in a single year. Gilliam is classified as unisex in SSA records: the opposite-sex variant accounts for 10 additional births since 1982.

Decade-level aggregation shows that Gilliam performed strongest in the 1920s, accumulating 47 births during that ten-year window. Across the 7 decades of recorded activity, Gilliam shows a clear decline from its mid-century high.

No etymological entry is currently available for Gilliam 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 147 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.