Jo — #4282 US girls' name

What the Data Says About Jo

The Social Security Administration has registered 179,020 babies named Jo between 1881 and 2024, spanning 144 consecutive years of U.S. birth records. As a girl's name, Jo currently holds the #4282 rank among girls for 2024. The name reached its historical peak in 1954, when 8,052 babies received it in a single year.

Decade-level aggregation shows that Jo performed strongest in the 1950s, accumulating 63,941 births during that ten-year window. Across the 15 decades of recorded activity, Jo shows a clear decline from its mid-century high. Geographically, the name is most concentrated in Texas, which accounts for 19,389 births — the largest state-level total in the dataset — followed by New York and California. In total, SSA state-level files list Jo in 51 of the 51 U.S. reporting jurisdictions.

No etymological entry is currently available for Jo 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 179,020 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.