The baby name Koi appears in baby name data for the United States from 2006 to 2024. It was most popular in 2021 with 60 babies given the name.
In the later years of this period, Koi has become more popular compared with earlier years.
| Year | Count |
|---|---|
| 2006 | 10 |
| 2008 | 10 |
| 2011 | 5 |
| 2013 | 15 |
| 2014 | 15 |
| 2015 | 10 |
| 2017 | 8 |
| 2017 | 7 |
| 2019 | 11 |
| 2019 | 5 |
| 2020 | 6 |
| 2021 | 60 |
| 2021 | 26 |
| 2022 | 5 |
| 2022 | 29 |
| 2023 | 56 |
| 2023 | 7 |
| 2024 | 26 |
| 2024 | 25 |