Kaj — #5929 US boys' name

What the Data Says About Kaj

The Social Security Administration has registered 510 babies named Kaj between 1956 and 2024, spanning 69 consecutive years of U.S. birth records. As a boy's name, Kaj currently holds the #5929 rank among boys for 2024. The name reached its historical peak in 2006, when 20 babies received it in a single year.

Decade-level aggregation shows that Kaj performed strongest in the 2000s, accumulating 140 births during that ten-year window. Across the 8 decades of recorded activity, Kaj shows notable generational variation in parental adoption. Geographically, the name is most concentrated in California, which accounts for 26 births — the largest state-level total in the dataset — followed by . In total, SSA state-level files list Kaj in 1 of the 51 U.S. reporting jurisdictions.

No etymological entry is currently available for Kaj 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 510 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.