Total babies named Llewelyn (all years): 170
| Year | Boys (count / rank / %) |
|---|---|
| 2024 | 23 / #4495 / 0.001% |
| 2023 | 13 / #6746 / 0.001% |
| 2022 | 13 / #6689 / 0.001% |
| 2021 | 10 / #7918 / 0.001% |
| 2020 | 6 / #11434 / 0.000% |
| 2019 | 7 / #10391 / 0.000% |
| 2018 | 6 / #11598 / 0.000% |
| 2017 | — |
| 2015 | 5 / #13265 / 0.000% |
| 1978 | 5 / #6389 / 0.000% |
| Year | Boys (count / rank / %) |
|---|---|
| 1976 | 5 / #6131 / 0.000% |
| 1975 | 5 / #5970 / 0.000% |
| 1962 | 7 / #3511 / 0.000% |
| 1959 | 5 / #4332 / 0.000% |
| 1957 | 7 / #3435 / 0.000% |
| 1955 | 5 / #4178 / 0.000% |
| 1953 | 5 / #4131 / 0.000% |
| 1929 | 6 / #3789 / 0.001% |
| 1926 | 6 / #4006 / 0.001% |
| 1921 | 8 / #3381 / 0.001% |
| Year | Boys (count / rank / %) |
|---|---|
| 1918 | 5 / #4536 / 0.000% |
| 1916 | 8 / #3072 / 0.001% |