Guillermina — #13558 US girls' name

What the Data Says About Guillermina

The Social Security Administration has registered 1,924 babies named Guillermina between 1918 and 2024, spanning 107 consecutive years of U.S. birth records. As a girl's name, Guillermina currently holds the #13558 rank among girls for 2024. The name reached its historical peak in 1966, when 40 babies received it in a single year.

Decade-level aggregation shows that Guillermina performed strongest in the 1970s, accumulating 350 births during that ten-year window. Across the 12 decades of recorded activity, Guillermina shows a clear decline from its mid-century high. Geographically, the name is most concentrated in California, which accounts for 705 births — the largest state-level total in the dataset — followed by Texas and Illinois. In total, SSA state-level files list Guillermina in 4 of the 51 U.S. reporting jurisdictions.

No etymological entry is currently available for Guillermina 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 1,924 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.