Total babies named Mieczyslaw (all years): 96
| Year | Boys (count / rank / %) |
|---|---|
| 1921 | 8 / #3402 / 0.001% |
| 1920 | 8 / #3395 / 0.001% |
| 1919 | 11 / #2614 / 0.001% |
| 1918 | 10 / #2823 / 0.001% |
| 1917 | 16 / #1955 / 0.002% |
| 1916 | 12 / #2354 / 0.001% |
| 1915 | 13 / #2139 / 0.002% |
| 1914 | 11 / #2061 / 0.002% |
| 1913 | 7 / #2419 / 0.001% |