Alfonso — #920 US boys' name

What the Data Says About Alfonso

The Social Security Administration has registered 41,238 babies named Alfonso between 1881 and 2024, spanning 144 consecutive years of U.S. birth records. As a boy's name, Alfonso currently holds the #920 rank among boys for 2024. The name reached its historical peak in 1991, when 574 babies received it in a single year.

Decade-level aggregation shows that Alfonso performed strongest in the 1990s, accumulating 5,201 births during that ten-year window. Across the 15 decades of recorded activity, Alfonso shows a clear decline from its mid-century high. Geographically, the name is most concentrated in California, which accounts for 11,362 births — the largest state-level total in the dataset — followed by Texas and New York. In total, SSA state-level files list Alfonso in 39 of the 51 U.S. reporting jurisdictions.

No etymological entry is currently available for Alfonso 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 41,238 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.