Fidelis — unisex name

What the Data Says About Fidelis

The Social Security Administration has registered 114 babies named Fidelis between 1904 and 1941, spanning 38 consecutive years of U.S. birth records. As a girl's name, Fidelis currently falls outside the top 1,000 girls' names for 1941. The name reached its historical peak in 1926, when 11 babies received it in a single year. Fidelis is classified as unisex in SSA records: the opposite-sex variant accounts for 49 additional births since 1903.

Decade-level aggregation shows that Fidelis performed strongest in the 1920s, accumulating 52 births during that ten-year window. Across the 5 decades of recorded activity, Fidelis shows a clear decline from its mid-century high.

No etymological entry is currently available for Fidelis 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 114 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.