Millie — #86 US girls' name

What the Data Says About Millie

The Social Security Administration has registered 42,553 babies named Millie between 1880 and 2024, spanning 145 consecutive years of U.S. birth records. As a girl's name, Millie currently holds the #86 rank among girls for 2024. The name reached its historical peak in 2024, when 2,910 babies received it in a single year.

Decade-level aggregation shows that Millie performed strongest in the 2020s, accumulating 10,866 births during that ten-year window. Across the 15 decades of recorded activity, Millie shows a stable profile with only moderate drift from its peak decade. Geographically, the name is most concentrated in New York, which accounts for 2,889 births — the largest state-level total in the dataset — followed by Texas and California. In total, SSA state-level files list Millie in 51 of the 51 U.S. reporting jurisdictions.

No etymological entry is currently available for Millie 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 42,553 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.