Total babies named Lethea (all years): 54
| Year | Girls (count / rank / %) |
|---|---|
| 1970 | 5 / #8722 / 0.000% |
| 1965 | 5 / #7080 / 0.000% |
| 1963 | 7 / #5635 / 0.000% |
| 1959 | 7 / #5324 / 0.000% |
| 1950 | 7 / #4546 / 0.000% |
| 1929 | 6 / #4351 / 0.001% |
| 1923 | 6 / #4713 / 0.001% |
| 1921 | 5 / #5542 / 0.000% |
| 1911 | 6 / #2343 / 0.001% |