Is Phi a boy or girl name?

Phi is mostly a boy’s name. Of the 519 Americans recorded with the name since 1880, 8.7% were girls and 91.3% were boys.

Name Legacy

Phi

Recorded 1976–2015 · United States

Phi was most popular in 1992, when 26 American babies were given the name — ranking #6,420 that year. It was not recorded in 2025. Across 1880–2025 the Social Security Administration has recorded 519 people named Phi.

Phi over time

Births per year. The dot marks Phi’s peak in 1992. Gaps are years the SSA suppressed, which it does for any name given to fewer than five babies.

Is Phi a boy’s or a girl’s name?

Across the whole record Phi is mostly a boy’s name — 8.7% of the 519 Americans given it were girls and 91.3% were boys.

Counted from every US birth the Social Security Administration recorded under this name, so it reflects use rather than opinion. A name given to fewer than five babies of one sex in a year is withheld at source and is not counted.

Names that peaked alongside Phi

Where Phi is most concentrated

How much more common the name is in each state than across the country as a whole.

California 7.4×

Explore further

See Phi on the interactive charts

Source: U.S.A. Social Security Administration. Years 1880–2025. namelegacy.org