Cecillia — #10300 US girls' name

What the Data Says About Cecillia

The Social Security Administration has registered 556 babies named Cecillia between 1907 and 2024, spanning 118 consecutive years of U.S. birth records. As a girl's name, Cecillia currently holds the #10300 rank among girls for 2024. The name reached its historical peak in 2007, when 20 babies received it in a single year.

Decade-level aggregation shows that Cecillia performed strongest in the 2000s, accumulating 119 births during that ten-year window. Across the 12 decades of recorded activity, Cecillia shows notable generational variation in parental adoption. 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 Cecillia in 1 of the 51 U.S. reporting jurisdictions.

No etymological entry is currently available for Cecillia 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 556 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.