Total babies named Boleslaus (all years): 255
| Year | Boys (count / rank / %) |
|---|---|
| 1932 | 7 / #3119 / 0.001% |
| 1930 | 5 / #4055 / 0.000% |
| 1929 | 5 / #4026 / 0.000% |
| 1928 | 8 / #3103 / 0.001% |
| 1927 | 5 / #4269 / 0.000% |
| 1925 | 11 / #2610 / 0.001% |
| 1924 | 13 / #2364 / 0.001% |
| 1923 | 25 / #1508 / 0.002% |
| 1922 | 22 / #1654 / 0.002% |
| 1921 | 18 / #1915 / 0.002% |
| Year | Boys (count / rank / %) |
|---|---|
| 1920 | 7 / #3520 / 0.001% |
| 1919 | 18 / #1818 / 0.002% |
| 1918 | 16 / #2008 / 0.002% |
| 1917 | 11 / #2440 / 0.001% |
| 1916 | 15 / #1966 / 0.002% |
| 1915 | 22 / #1466 / 0.003% |
| 1914 | 15 / #1614 / 0.002% |
| 1913 | 17 / #1262 / 0.003% |
| 1912 | 10 / #1630 / 0.002% |
| 1911 | 5 / #1772 / 0.002% |