Sidney — #1368 US boys' name

What the Data Says About Sidney

The Social Security Administration has registered 84,056 babies named Sidney between 1880 and 2024, spanning 145 consecutive years of U.S. birth records. As a boy's name, Sidney currently holds the #1368 rank among boys for 2024. The name reached its historical peak in 1918, when 1,879 babies received it in a single year. Sidney is classified as unisex in SSA records: the opposite-sex variant accounts for 24,680 additional births since 1880.

Decade-level aggregation shows that Sidney performed strongest in the 1920s, accumulating 14,201 births during that ten-year window. Across the 15 decades of recorded activity, Sidney shows a clear decline from its mid-century high. Geographically, the name is most concentrated in New York, which accounts for 11,101 births — the largest state-level total in the dataset — followed by Texas and Louisiana. In total, SSA state-level files list Sidney in 51 of the 51 U.S. reporting jurisdictions.

No etymological entry is currently available for Sidney 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 84,056 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.