Louisa — #733 US girls' name

What the Data Says About Louisa

The Social Security Administration has registered 21,523 babies named Louisa between 1880 and 2024, spanning 145 consecutive years of U.S. birth records. As a girl's name, Louisa currently holds the #733 rank among girls for 2024. The name reached its historical peak in 2021, when 424 babies received it in a single year.

Decade-level aggregation shows that Louisa performed strongest in the 2010s, accumulating 2,939 births during that ten-year window. Across the 15 decades of recorded activity, Louisa shows notable generational variation in parental adoption. Geographically, the name is most concentrated in New York, which accounts for 1,939 births — the largest state-level total in the dataset — followed by California and Texas. In total, SSA state-level files list Louisa in 46 of the 51 U.S. reporting jurisdictions.

No etymological entry is currently available for Louisa 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 21,523 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.