Total babies named Ertha (all years): 241
| Year | Girls (count / rank / %) |
|---|---|
| 1968 | 5 / #7338 / 0.000% |
| 1960 | 7 / #5332 / 0.000% |
| 1959 | 6 / #5763 / 0.000% |
| 1958 | 5 / #6374 / 0.000% |
| 1957 | 8 / #4648 / 0.000% |
| 1955 | 5 / #6122 / 0.000% |
| 1954 | 5 / #5993 / 0.000% |
| 1945 | 6 / #4181 / 0.000% |
| 1944 | 5 / #4781 / 0.000% |
| 1938 | 7 / #3587 / 0.001% |
| Year | Girls (count / rank / %) |
|---|---|
| 1937 | 5 / #4453 / 0.000% |
| 1936 | 6 / #3833 / 0.001% |
| 1935 | 8 / #3243 / 0.001% |
| 1934 | 7 / #3572 / 0.001% |
| 1933 | 8 / #3202 / 0.001% |
| 1932 | 7 / #3684 / 0.001% |
| 1931 | 5 / #4540 / 0.000% |
| 1930 | 7 / #3779 / 0.001% |
| 1929 | 16 / #2120 / 0.001% |
| 1928 | 7 / #3894 / 0.001% |
| Year | Girls (count / rank / %) |
|---|---|
| 1927 | 6 / #4458 / 0.001% |
| 1926 | 11 / #2934 / 0.001% |
| 1925 | 11 / #2999 / 0.001% |
| 1924 | 7 / #4136 / 0.001% |
| 1923 | 9 / #3460 / 0.001% |
| 1922 | 8 / #3770 / 0.001% |
| 1921 | 9 / #3498 / 0.001% |
| 1919 | 9 / #3291 / 0.001% |
| 1918 | 7 / #4004 / 0.001% |
| 1917 | 5 / #4821 / 0.000% |
| Year | Girls (count / rank / %) |
|---|---|
| 1916 | 10 / #2896 / 0.001% |
| 1915 | 7 / #3547 / 0.001% |
| 1914 | 7 / #2988 / 0.001% |