Jillian — #1132 US girls' name

What the Data Says About Jillian

The Social Security Administration has registered 83,018 babies named Jillian between 1944 and 2024, spanning 81 consecutive years of U.S. birth records. As a girl's name, Jillian currently holds the #1132 rank among girls for 2024. The name reached its historical peak in 1982, when 3,056 babies received it in a single year.

Decade-level aggregation shows that Jillian performed strongest in the 1980s, accumulating 25,446 births during that ten-year window. Across the 9 decades of recorded activity, Jillian shows a clear decline from its mid-century high. Geographically, the name is most concentrated in New York, which accounts for 9,013 births — the largest state-level total in the dataset — followed by California and Massachusetts. In total, SSA state-level files list Jillian in 51 of the 51 U.S. reporting jurisdictions.

No etymological entry is currently available for Jillian 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 83,018 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.