Total babies named Kallahan (all years): 104
| Year | Boys (count / rank / %) |
|---|---|
| 2024 | 24 / #4358 / 0.001% |
| 2023 | 14 / #6349 / 0.001% |
| 2022 | 15 / #6002 / 0.001% |
| 2021 | 8 / #9249 / 0.000% |
| 2020 | 8 / #9120 / 0.000% |
| 2019 | 9 / #8522 / 0.001% |
| 2018 | 10 / #7882 / 0.001% |
| 2017 | 5 / #13233 / 0.000% |