Zi is a very rare name used for both girls and boys that was most common in the 2000s and has all but disappeared.
Zi is predominantly a girl name. It last appears in U.S. records in 2017. Zi first appears in 2001 and peaked in 2005 (12 births).
| Year | U.S. births | U.S. + territories | ♀ Rank | ♂ Rank |
|---|---|---|---|---|
| 2017 | 5 | 5 | #18,420 | — |
| 2016 | 6 | 6 | — | #12,171 |
| 2015 | 6 | 6 | — | #12,078 |
| 2014 | 7 | 7 | — | #10,706 |
| 2013 | 10 | 10 | #19,248 | #14,055 |
| 2012 | 5 | 5 | #19,503 | — |
| 2009 | 6 | 6 | #17,276 | — |
| 2007 | 16 | 16 | #15,471 | #8,908 |
| 2006 | 17 | 17 | #12,413 | #9,583 |
| 2005 | 21 | 21 | #9,446 | #8,295 |
| 2004 | 10 | 10 | #18,818 | #13,217 |
| 2002 | 16 | 16 | #15,422 | #7,051 |
| 2001 | 7 | 7 | #13,511 | — |