Total babies named Boleslaw (all years): 277
| Year | Boys (count / rank / %) |
|---|---|
| 1927 | 7 / #3490 / 0.001% |
| 1926 | 7 / #3423 / 0.001% |
| 1925 | 7 / #3453 / 0.001% |
| 1924 | 7 / #3531 / 0.001% |
| 1923 | 9 / #2969 / 0.001% |
| 1922 | 9 / #3045 / 0.001% |
| 1921 | 13 / #2393 / 0.001% |
| 1920 | 19 / #1827 / 0.002% |
| 1919 | 39 / #1101 / 0.004% |
| 1918 | 21 / #1660 / 0.002% |
| Year | Boys (count / rank / %) |
|---|---|
| 1917 | 27 / #1328 / 0.003% |
| 1916 | 40 / #1013 / 0.004% |
| 1915 | 23 / #1415 / 0.003% |
| 1914 | 22 / #1268 / 0.003% |
| 1913 | 12 / #1592 / 0.002% |
| 1912 | 10 / #1631 / 0.002% |
| 1909 | 5 / #1477 / 0.003% |