Marylou — #4881 US girls' name

What the Data Says About Marylou

The Social Security Administration has registered 13,084 babies named Marylou between 1898 and 2024, spanning 127 consecutive years of U.S. birth records. As a girl's name, Marylou currently holds the #4881 rank among girls for 2024. The name reached its historical peak in 1942, when 376 babies received it in a single year.

Decade-level aggregation shows that Marylou performed strongest in the 1940s, accumulating 3,141 births during that ten-year window. Across the 14 decades of recorded activity, Marylou shows a clear decline from its mid-century high. Geographically, the name is most concentrated in New York, which accounts for 1,742 births — the largest state-level total in the dataset — followed by California and Pennsylvania. In total, SSA state-level files list Marylou in 32 of the 51 U.S. reporting jurisdictions.

No etymological entry is currently available for Marylou 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 13,084 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.