Cosimo — #5064 US boys' name

What the Data Says About Cosimo

The Social Security Administration has registered 1,000 babies named Cosimo between 1911 and 2024, spanning 114 consecutive years of U.S. birth records. As a boy's name, Cosimo currently holds the #5064 rank among boys for 2024. The name reached its historical peak in 1927, when 30 babies received it in a single year.

Decade-level aggregation shows that Cosimo performed strongest in the 1920s, accumulating 218 births during that ten-year window. Across the 12 decades of recorded activity, Cosimo shows a clear decline from its mid-century high. Geographically, the name is most concentrated in New York, which accounts for 196 births — the largest state-level total in the dataset — followed by Pennsylvania and New Jersey. In total, SSA state-level files list Cosimo in 4 of the 51 U.S. reporting jurisdictions.

No etymological entry is currently available for Cosimo 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 1,000 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.