Phi — boys' name

What the Data Says About Phi

The Social Security Administration has registered 474 babies named Phi between 1976 and 2015, spanning 40 consecutive years of U.S. birth records. As a boy's name, Phi currently falls outside the top 1,000 boys' names for 2015. The name reached its historical peak in 1992, when 26 babies received it in a single year. Phi is classified as unisex in SSA records: the opposite-sex variant accounts for 45 additional births since 1981.

Decade-level aggregation shows that Phi performed strongest in the 1990s, accumulating 171 births during that ten-year window. Across the 5 decades of recorded activity, Phi shows a clear decline from its mid-century high. Geographically, the name is most concentrated in California, which accounts for 82 births — the largest state-level total in the dataset — followed by Texas. In total, SSA state-level files list Phi in 2 of the 51 U.S. reporting jurisdictions.

No etymological entry is currently available for Phi 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 474 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.