Thelda — girls' name

What the Data Says About Thelda

The Social Security Administration has registered 521 babies named Thelda between 1902 and 1955, spanning 54 consecutive years of U.S. birth records. As a girl's name, Thelda currently falls outside the top 1,000 girls' names for 1955. The name reached its historical peak in 1926, when 32 babies received it in a single year.

Decade-level aggregation shows that Thelda performed strongest in the 1920s, accumulating 196 births during that ten-year window. Across the 6 decades of recorded activity, Thelda shows a clear decline from its mid-century high. Geographically, the name is most concentrated in Illinois, which accounts for 5 births — the largest state-level total in the dataset — followed by . In total, SSA state-level files list Thelda in 1 of the 51 U.S. reporting jurisdictions.

No etymological entry is currently available for Thelda 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 521 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.