Total babies named Ortha (all years): 254
| Year | Girls (count / rank / %) |
|---|---|
| 1942 | 5 / #5191 / 0.000% |
| 1941 | 5 / #4904 / 0.000% |
| 1934 | 11 / #2694 / 0.001% |
| 1932 | 9 / #3220 / 0.001% |
| 1931 | 11 / #2715 / 0.001% |
| 1930 | 6 / #4431 / 0.001% |
| 1929 | 10 / #3086 / 0.001% |
| 1928 | 7 / #4093 / 0.001% |
| 1927 | 5 / #5418 / 0.000% |
| 1926 | 13 / #2678 / 0.001% |
| Year | Girls (count / rank / %) |
|---|---|
| 1925 | 14 / #2585 / 0.001% |
| 1924 | 12 / #2932 / 0.001% |
| 1923 | 20 / #2006 / 0.002% |
| 1922 | 9 / #3599 / 0.001% |
| 1921 | 15 / #2472 / 0.001% |
| 1920 | 11 / #3050 / 0.001% |
| 1919 | 11 / #2960 / 0.001% |
| 1918 | 9 / #3453 / 0.001% |
| 1917 | 8 / #3628 / 0.001% |
| 1916 | 11 / #2790 / 0.001% |
| Year | Girls (count / rank / %) |
|---|---|
| 1915 | 10 / #2855 / 0.001% |
| 1913 | 9 / #2291 / 0.001% |
| 1912 | 11 / #1808 / 0.002% |
| 1911 | 7 / #2139 / 0.002% |
| 1909 | 9 / #1573 / 0.003% |
| 1904 | 6 / #1812 / 0.002% |