Trejan is a very rare boys' name that was most common in the 1990s and has all but disappeared.
Trejan is a boy name. It last appears in U.S. records in 2004. Trejan first appears in 1994 and peaked in 1999 (29 births).
| Year | U.S. births | U.S. + territories | Rank |
|---|---|---|---|
| 2004 | 7 | 7 | #9,863 |
| 2003 | 9 | 9 | #7,777 |
| 2002 | 6 | 6 | #10,555 |
| 2001 | 7 | 7 | #9,164 |
| 2000 | 14 | 14 | #5,283 |
| 1999 | 29 | 29 | #2,933 |
| 1998 | 8 | 8 | #7,497 |
| 1997 | 5 | — | #10,701 |
| 1994 | 5 | — | #10,141 |