Theta — girls' name

What the Data Says About Theta

The Social Security Administration has registered 402 babies named Theta between 1907 and 2015, spanning 109 consecutive years of U.S. birth records. As a girl's name, Theta currently falls outside the top 1,000 girls' names for 2015. The name reached its historical peak in 1907, when 20 babies received it in a single year.

Decade-level aggregation shows that Theta performed strongest in the 1920s, accumulating 101 births during that ten-year window. Across the 8 decades of recorded activity, Theta shows a clear decline from its mid-century high. Geographically, the name is most concentrated in Texas, which accounts for 5 births — the largest state-level total in the dataset — followed by . In total, SSA state-level files list Theta in 1 of the 51 U.S. reporting jurisdictions.

No etymological entry is currently available for Theta 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 402 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.