Thea — #348 US girls' name

What the Data Says About Thea

The Social Security Administration has registered 19,237 babies named Thea between 1880 and 2024, spanning 145 consecutive years of U.S. birth records. As a girl's name, Thea currently holds the #348 rank among girls for 2024. The name reached its historical peak in 2018, when 1,208 babies received it in a single year.

Decade-level aggregation shows that Thea performed strongest in the 2010s, accumulating 6,406 births during that ten-year window. Across the 15 decades of recorded activity, Thea shows a stable profile with only moderate drift from its peak decade. Geographically, the name is most concentrated in California, which accounts for 1,684 births — the largest state-level total in the dataset — followed by New York and Pennsylvania. In total, SSA state-level files list Thea in 51 of the 51 U.S. reporting jurisdictions.

No etymological entry is currently available for Thea 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 19,237 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.