Lois — #1689 US girls' name

What the Data Says About Lois

The Social Security Administration has registered 332,830 babies named Lois between 1880 and 2024, spanning 145 consecutive years of U.S. birth records. As a girl's name, Lois currently holds the #1689 rank among girls for 2024. The name reached its historical peak in 1927, when 10,505 babies received it in a single year.

Decade-level aggregation shows that Lois performed strongest in the 1920s, accumulating 88,133 births during that ten-year window. Across the 15 decades of recorded activity, Lois shows a clear decline from its mid-century high. Geographically, the name is most concentrated in Pennsylvania, which accounts for 27,236 births — the largest state-level total in the dataset — followed by Illinois and Ohio. In total, SSA state-level files list Lois in 51 of the 51 U.S. reporting jurisdictions.

No etymological entry is currently available for Lois 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 332,830 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.