Total babies named Willoughby (all years): 309
| Year | Boys (count / rank / %) |
|---|---|
| 2024 | 5 / #14119 / 0.000% |
| 2023 | — |
| 2022 | — |
| 2021 | 7 / #10727 / 0.000% |
| 2020 | — |
| 2019 | — |
| 2018 | 6 / #12067 / 0.000% |
| 2017 | — |
| 2016 | — |
| 2015 | 6 / #12022 / 0.000% |
| Year | Boys (count / rank / %) |
|---|---|
| 2014 | 6 / #12034 / 0.000% |
| 2013 | 8 / #9617 / 0.000% |
| 2011 | 8 / #9557 / 0.000% |
| 2010 | — |
| 2000 | — |
| 1958 | 6 / #3935 / 0.000% |
| 1953 | 5 / #4330 / 0.000% |
| 1945 | 5 / #3771 / 0.000% |
| 1943 | 5 / #4027 / 0.000% |
| 1941 | 7 / #3129 / 0.001% |
| Year | Boys (count / rank / %) |
|---|---|
| 1940 | 6 / #3457 / 0.001% |
| 1935 | 5 / #4139 / 0.000% |
| 1934 | 5 / #4195 / 0.000% |
| 1933 | 5 / #4141 / 0.001% |
| 1931 | 7 / #3384 / 0.001% |
| 1930 | 7 / #3588 / 0.001% |
| 1929 | 9 / #2975 / 0.001% |
| 1928 | 8 / #3354 / 0.001% |
| 1927 | 8 / #3441 / 0.001% |
| 1926 | 7 / #3700 / 0.001% |
| Year | Boys (count / rank / %) |
|---|---|
| 1925 | 7 / #3733 / 0.001% |
| 1923 | 15 / #2221 / 0.001% |
| 1922 | 9 / #3242 / 0.001% |
| 1921 | 5 / #4967 / 0.000% |
| 1920 | 14 / #2333 / 0.001% |
| 1919 | 6 / #4157 / 0.001% |
| 1918 | 6 / #4166 / 0.001% |
| 1917 | 9 / #2952 / 0.001% |
| 1916 | 6 / #3887 / 0.001% |
| 1915 | 5 / #4383 / 0.001% |