Marlo — #1703 US unisex name

What the Data Says About Marlo

The Social Security Administration has registered 7,155 babies named Marlo between 1931 and 2024, spanning 94 consecutive years of U.S. birth records. As a girl's name, Marlo currently holds the #1703 rank among girls for 2024. The name reached its historical peak in 1970, when 593 babies received it in a single year. Marlo is classified as unisex in SSA records: the opposite-sex variant accounts for 3,583 additional births since 1915.

Decade-level aggregation shows that Marlo performed strongest in the 1970s, accumulating 2,546 births during that ten-year window. Across the 10 decades of recorded activity, Marlo shows a clear decline from its mid-century high. Geographically, the name is most concentrated in California, which accounts for 878 births — the largest state-level total in the dataset — followed by Texas and New York. In total, SSA state-level files list Marlo in 38 of the 51 U.S. reporting jurisdictions.

No etymological entry is currently available for Marlo 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 7,155 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.