Kieffer is a very rare boys' name that was most common in the 1990s and has all but disappeared.
Kieffer is a boy name. It last appears in U.S. records in 2014. Kieffer was first reported in SSA data in 1989 and peaked in 1994 (17 births).
| Year | U.S. births | U.S. + territories | Rank |
|---|---|---|---|
| 2014 | 6 | 6 | #11,492 |
| 2012 | 8 | 8 | #9,338 |
| 2007 | 9 | 9 | #8,609 |
| 2006 | 5 | 5 | #13,127 |
| 2003 | 9 | 9 | #7,576 |
| 2002 | 7 | 7 | #8,975 |
| 2001 | 5 | 5 | #11,566 |
| 1999 | 5 | 5 | #10,857 |
| 1998 | 9 | 9 | #6,593 |
| 1997 | 7 | — | #7,735 |
| 1996 | 16 | — | #4,112 |
| 1995 | 7 | — | #7,430 |
| 1994 | 17 | — | #3,836 |
| 1993 | 9 | — | #6,009 |
| 1992 | 16 | — | #3,847 |
| 1991 | 11 | — | #4,953 |
| 1990 | 14 | — | #4,093 |
| 1989 | 6 | — | #7,473 |