Gillian — #3124 US girls' name

What the Data Says About Gillian

The Social Security Administration has registered 16,011 babies named Gillian between 1922 and 2024, spanning 103 consecutive years of U.S. birth records. As a girl's name, Gillian currently holds the #3124 rank among girls for 2024. The name reached its historical peak in 1999, when 1,022 babies received it in a single year.

Decade-level aggregation shows that Gillian performed strongest in the 2000s, accumulating 5,489 births during that ten-year window. Across the 11 decades of recorded activity, Gillian shows a clear decline from its mid-century high. Geographically, the name is most concentrated in California, which accounts for 1,814 births — the largest state-level total in the dataset — followed by New York and Texas. In total, SSA state-level files list Gillian in 47 of the 51 U.S. reporting jurisdictions.

No etymological entry is currently available for Gillian 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 16,011 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.