Aizen is a rare boys' name that has climbed to its highest level yet, peaking in 2024.
Aizen is a boy name. In 2025 it ranked #1,081 for boy births in the United States (and #2,215 across all names), given to 199 babies — 216 including U.S. territories. Aizen first appears in 2007 and peaked in 2024 (223 births).
| Year | U.S. births | U.S. + territories | Rank |
|---|---|---|---|
| 2025 | 199 | 216 | #1,081 |
| 2024 | 223 | 235 | #1,005 |
| 2023 | 190 | 195 | #1,111 |
| 2022 | 209 | 209 | #1,052 |
| 2021 | 152 | 152 | #1,253 |
| 2020 | 114 | 114 | #1,489 |
| 2019 | 111 | 111 | #1,523 |
| 2018 | 94 | 94 | #1,680 |
| 2017 | 106 | 106 | #1,541 |
| 2016 | 94 | 94 | #1,675 |
| 2015 | 80 | 80 | #1,848 |
| 2014 | 65 | 65 | #2,118 |
| 2013 | 71 | 71 | #1,943 |
| 2012 | 56 | 56 | #2,293 |
| 2011 | 68 | 68 | #1,999 |
| 2010 | 47 | 47 | #2,579 |
| 2009 | 27 | 27 | #3,834 |
| 2008 | 19 | 19 | #4,903 |
| 2007 | 9 | 9 | #8,187 |