Zai is a rare name used for both girls and boys that has climbed to its highest level yet, peaking in 2023.
Zai is predominantly a boy name. In 2025 it ranked #5,039 among boys (20) and #14,895 among girls (6) — overall #8,834 across all names. The charts below show girls and boys separately.
| Year | U.S. births | U.S. + territories | ♀ Rank | ♂ Rank |
|---|---|---|---|---|
| 2025 | 26 | 26 | #14,895 | #5,039 |
| 2024 | 28 | 28 | — | #3,980 |
| 2023 | 33 | 33 | #13,418 | #4,215 |
| 2022 | 31 | 31 | #15,260 | #4,296 |
| 2021 | 22 | 22 | #17,600 | #5,556 |
| 2020 | 31 | 31 | #12,111 | #4,420 |
| 2019 | 22 | 22 | — | #4,632 |
| 2018 | 15 | 15 | #12,431 | #10,734 |
| 2017 | 11 | 11 | #15,853 | #14,213 |
| 2016 | 14 | 14 | #18,808 | #8,793 |
| 2015 | 9 | 9 | — | #8,726 |
| 2014 | 20 | 20 | #19,155 | #5,991 |
| 2013 | 10 | 10 | — | #8,102 |
| 2012 | 11 | 11 | #19,474 | #12,241 |
| 2011 | 9 | 9 | — | #8,750 |
| 2010 | 11 | 11 | #19,778 | #12,193 |
| 2009 | 5 | 5 | — | #14,494 |
| 2004 | 5 | 5 | — | #13,195 |
| 2001 | 5 | 5 | #17,938 | — |