Casto — boys' name

What the Data Says About Casto

The Social Security Administration has registered 21 babies named Casto between 1915 and 1978, spanning 64 consecutive years of U.S. birth records. As a boy's name, Casto currently falls outside the top 1,000 boys' names for 1978. The name reached its historical peak in 1940, when 6 babies received it in a single year.

Decade-level aggregation shows that Casto performed strongest in the 1940s, accumulating 6 births during that ten-year window. Across the 4 decades of recorded activity, Casto shows a stable profile with only moderate drift from its peak decade.

No etymological entry is currently available for Casto 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 21 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.