Hennessey — #15979 US girls' name

What the Data Says About Hennessey

The Social Security Administration has registered 383 babies named Hennessey between 1992 and 2024, spanning 33 consecutive years of U.S. birth records. As a girl's name, Hennessey currently holds the #15979 rank among girls for 2024. The name reached its historical peak in 2015, when 27 babies received it in a single year.

Decade-level aggregation shows that Hennessey performed strongest in the 2000s, accumulating 153 births during that ten-year window. Across the 4 decades of recorded activity, Hennessey shows notable generational variation in parental adoption. Geographically, the name is most concentrated in California, which accounts for 17 births — the largest state-level total in the dataset — followed by Texas. In total, SSA state-level files list Hennessey in 2 of the 51 U.S. reporting jurisdictions.

No etymological entry is currently available for Hennessey 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 383 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.