Lassie — girls' name

What the Data Says About Lassie

The Social Security Administration has registered 979 babies named Lassie between 1883 and 1963, spanning 81 consecutive years of U.S. birth records. As a girl's name, Lassie currently falls outside the top 1,000 girls' names for 1963. The name reached its historical peak in 1916, when 42 babies received it in a single year.

Decade-level aggregation shows that Lassie performed strongest in the 1910s, accumulating 247 births during that ten-year window. Across the 9 decades of recorded activity, Lassie shows a clear decline from its mid-century high. Geographically, the name is most concentrated in Tennessee, which accounts for 115 births — the largest state-level total in the dataset — followed by Kentucky and Alabama. In total, SSA state-level files list Lassie in 5 of the 51 U.S. reporting jurisdictions.

No etymological entry is currently available for Lassie 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 979 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.