Maciej — boys' name

What the Data Says About Maciej

The Social Security Administration has registered 315 babies named Maciej between 1982 and 2020, spanning 39 consecutive years of U.S. birth records. As a boy's name, Maciej currently falls outside the top 1,000 boys' names for 2020. The name reached its historical peak in 1996, when 18 babies received it in a single year.

Decade-level aggregation shows that Maciej performed strongest in the 2000s, accumulating 128 births during that ten-year window. Across the 5 decades of recorded activity, Maciej shows a clear decline from its mid-century high. Geographically, the name is most concentrated in Illinois, which accounts for 86 births — the largest state-level total in the dataset — followed by New York and New Jersey. In total, SSA state-level files list Maciej in 3 of the 51 U.S. reporting jurisdictions.

No etymological entry is currently available for Maciej 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 315 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.