Isidore — #3450 US boys' name

What the Data Says About Isidore

The Social Security Administration has registered 3,390 babies named Isidore between 1881 and 2024, spanning 144 consecutive years of U.S. birth records. As a boy's name, Isidore currently holds the #3450 rank among boys for 2024. The name reached its historical peak in 1919, when 183 babies received it in a single year.

Decade-level aggregation shows that Isidore performed strongest in the 1910s, accumulating 1,357 births during that ten-year window. Across the 15 decades of recorded activity, Isidore shows a clear decline from its mid-century high. Geographically, the name is most concentrated in New York, which accounts for 1,861 births — the largest state-level total in the dataset — followed by Pennsylvania and Massachusetts. In total, SSA state-level files list Isidore in 5 of the 51 U.S. reporting jurisdictions.

No etymological entry is currently available for Isidore 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 3,390 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.