Winthrop: Statistics About The Baby Name Winthrop
| Year | Boy Rank | # Boys | % Boys | Girl Rank | # Girls | % Girls |
| 1915 | 903 | 48 | 0.0054% | * | * | * |
| 1911 | 893 | 15 | 0.0062% | * | * | * |
| 1906 | 927 | 9 | 0.0062% | * | * | * |
| 1905 | 997 | 8 | 0.0056% | * | * | * |
| * No data shown indicates the name was not among the top 1000 most popular names for that year. | ||||||