Lyllian — girls' name

What the Data Says About Lyllian

The Social Security Administration has registered 630 babies named Lyllian between 1923 and 2023, spanning 101 consecutive years of U.S. birth records. As a girl's name, Lyllian currently falls outside the top 1,000 girls' names for 2023. The name reached its historical peak in 2009, when 45 babies received it in a single year.

Decade-level aggregation shows that Lyllian performed strongest in the 2010s, accumulating 304 births during that ten-year window. Across the 5 decades of recorded activity, Lyllian shows a clear decline from its mid-century high. Geographically, the name is most concentrated in Indiana, which accounts for 11 births — the largest state-level total in the dataset — followed by Ohio. In total, SSA state-level files list Lyllian in 2 of the 51 U.S. reporting jurisdictions.

No etymological entry is currently available for Lyllian 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 630 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.