Aloysius — #4692 US boys' name

What the Data Says About Aloysius

The Social Security Administration has registered 5,704 babies named Aloysius between 1880 and 2024, spanning 145 consecutive years of U.S. birth records. As a boy's name, Aloysius currently holds the #4692 rank among boys for 2024. The name reached its historical peak in 1916, when 199 babies received it in a single year.

Decade-level aggregation shows that Aloysius performed strongest in the 1920s, accumulating 1,477 births during that ten-year window. Across the 15 decades of recorded activity, Aloysius shows a clear decline from its mid-century high. Geographically, the name is most concentrated in Pennsylvania, which accounts for 733 births — the largest state-level total in the dataset — followed by Illinois and Michigan. In total, SSA state-level files list Aloysius in 20 of the 51 U.S. reporting jurisdictions.

No etymological entry is currently available for Aloysius 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 5,704 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.