Sinclair — #6469 US boys' name

What the Data Says About Sinclair

The Social Security Administration has registered 1,421 babies named Sinclair between 1900 and 2024, spanning 125 consecutive years of U.S. birth records. As a boy's name, Sinclair currently holds the #6469 rank among boys for 2024. The name reached its historical peak in 1924, when 29 babies received it in a single year. Sinclair is classified as unisex in SSA records: the opposite-sex variant accounts for 448 additional births since 1989.

Decade-level aggregation shows that Sinclair performed strongest in the 1920s, accumulating 198 births during that ten-year window. Across the 13 decades of recorded activity, Sinclair shows a clear decline from its mid-century high. Geographically, the name is most concentrated in South Carolina, which accounts for 89 births — the largest state-level total in the dataset — followed by New York and Florida. In total, SSA state-level files list Sinclair in 5 of the 51 U.S. reporting jurisdictions.

No etymological entry is currently available for Sinclair 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 1,421 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.