Kacper — #5540 US boys' name

What the Data Says About Kacper

The Social Security Administration has registered 1,091 babies named Kacper between 1994 and 2024, spanning 31 consecutive years of U.S. birth records. As a boy's name, Kacper currently holds the #5540 rank among boys for 2024. The name reached its historical peak in 2007, when 88 babies received it in a single year.

Decade-level aggregation shows that Kacper performed strongest in the 2000s, accumulating 563 births during that ten-year window. Across the 4 decades of recorded activity, Kacper shows a clear decline from its mid-century high. Geographically, the name is most concentrated in Illinois, which accounts for 541 births — the largest state-level total in the dataset — followed by New York and New Jersey. In total, SSA state-level files list Kacper in 4 of the 51 U.S. reporting jurisdictions.

No etymological entry is currently available for Kacper 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 1,091 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.