Casmir — #9017 US boys' name

What the Data Says About Casmir

The Social Security Administration has registered 336 babies named Casmir between 1913 and 2024, spanning 112 consecutive years of U.S. birth records. As a boy's name, Casmir currently holds the #9017 rank among boys for 2024. The name reached its historical peak in 1918, when 24 babies received it in a single year.

Decade-level aggregation shows that Casmir performed strongest in the 1910s, accumulating 117 births during that ten-year window. Across the 7 decades of recorded activity, Casmir shows notable generational variation in parental adoption. Geographically, the name is most concentrated in Pennsylvania, which accounts for 16 births — the largest state-level total in the dataset — followed by Illinois and Michigan. In total, SSA state-level files list Casmir in 4 of the 51 U.S. reporting jurisdictions.

No etymological entry is currently available for Casmir 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 336 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.