Phi is a rare boys' name that was most common in the 1990s and has all but disappeared.
Phi is predominantly a boy name. It last appears in U.S. records in 2015. Phi was first reported in SSA data in 1976 and peaked in 1992 (26 births).
| Year | U.S. births | U.S. + territories | ♀ Rank | ♂ Rank |
|---|---|---|---|---|
| 2015 | 10 | 10 | — | #7,899 |
| 2012 | 5 | 5 | — | #13,714 |
| 2010 | 5 | 5 | — | #13,754 |
| 2009 | 14 | 14 | #19,509 | #8,821 |
| 2008 | 11 | 11 | — | #7,576 |
| 2007 | 8 | 8 | — | #9,532 |
| 2006 | 9 | 9 | — | #8,565 |
| 2005 | 10 | 10 | — | #7,518 |
| 2004 | 9 | 9 | — | #8,010 |
| 2003 | 13 | 13 | — | #5,801 |
| 2002 | 12 | 12 | — | #5,982 |
| 2001 | 8 | 8 | — | #8,115 |
| 2000 | 10 | 10 | — | #6,700 |
| 1999 | 17 | 17 | — | #4,290 |
| 1998 | 6 | 6 | — | #9,335 |
| 1997 | 16 | — | — | #4,190 |
| 1996 | 26 | — | #10,279 | #3,788 |
| 1995 | 8 | — | — | #6,827 |
| 1994 | 20 | — | — | #3,433 |
| 1993 | 16 | — | — | #3,967 |
| 1992 | 26 | — | — | #2,726 |
| 1991 | 25 | — | — | #2,731 |
| 1990 | 25 | — | #12,475 | #3,275 |
| 1989 | 17 | — | #13,888 | #4,456 |
| 1988 | 17 | — | — | #3,177 |
| 1987 | 23 | — | — | #2,442 |
| 1986 | 23 | — | — | #2,408 |
| 1985 | 13 | — | — | #3,552 |
| 1984 | 21 | — | #11,657 | #2,918 |
| 1983 | 21 | — | #11,499 | #2,882 |
| 1982 | 22 | — | #10,103 | #2,940 |
| 1981 | 23 | — | #11,641 | #2,653 |
| 1980 | 10 | — | — | #4,055 |
| 1979 | 10 | — | — | #4,006 |
| 1977 | 5 | — | — | #6,592 |
| 1976 | 5 | — | — | #6,253 |