Jan — unisex name

What the Data Says About Jan

The Social Security Administration has registered 54,527 babies named Jan between 1911 and 2021, spanning 111 consecutive years of U.S. birth records. As a girl's name, Jan currently falls outside the top 1,000 girls' names for 2021. The name reached its historical peak in 1956, when 3,201 babies received it in a single year. Jan is classified as unisex in SSA records: the opposite-sex variant accounts for 22,355 additional births since 1902.

Decade-level aggregation shows that Jan performed strongest in the 1950s, accumulating 26,169 births during that ten-year window. Across the 12 decades of recorded activity, Jan shows a clear decline from its mid-century high. Geographically, the name is most concentrated in California, which accounts for 5,314 births — the largest state-level total in the dataset — followed by Texas and Illinois. In total, SSA state-level files list Jan in 51 of the 51 U.S. reporting jurisdictions.

No etymological entry is currently available for Jan 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 54,527 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.