Ertha is a very rare girls' name that was most common in the 1920s and has all but disappeared.
Ertha is a girl name. It last appears in U.S. records in 1968. Ertha was first reported in SSA data in 1914 and peaked in 1929 (16 births).
| Year | U.S. births | U.S. + territories | Rank |
|---|---|---|---|
| 1968 | 5 | — | #7,339 |
| 1960 | 7 | — | #5,331 |
| 1959 | 6 | — | #5,762 |
| 1958 | 5 | — | #6,373 |
| 1957 | 8 | — | #4,649 |
| 1955 | 5 | — | #6,122 |
| 1954 | 5 | — | #5,993 |
| 1945 | 6 | — | #4,181 |
| 1944 | 5 | — | #4,781 |
| 1938 | 7 | — | #3,587 |
| 1937 | 5 | — | #4,453 |
| 1936 | 6 | — | #3,833 |
| 1935 | 8 | — | #3,243 |
| 1934 | 7 | — | #3,572 |
| 1933 | 8 | — | #3,202 |
| 1932 | 7 | — | #3,684 |
| 1931 | 5 | — | #4,540 |
| 1930 | 7 | — | #3,779 |
| 1929 | 16 | — | #2,120 |
| 1928 | 7 | — | #3,894 |
| 1927 | 6 | — | #4,458 |
| 1926 | 11 | — | #2,934 |
| 1925 | 11 | — | #2,999 |
| 1924 | 7 | — | #4,136 |
| 1923 | 9 | — | #3,460 |
| 1922 | 8 | — | #3,770 |
| 1921 | 9 | — | #3,498 |
| 1919 | 9 | — | #3,291 |
| 1918 | 7 | — | #4,004 |
| 1917 | 5 | — | #4,821 |
| 1916 | 10 | — | #2,896 |
| 1915 | 7 | — | #3,547 |
| 1914 | 7 | — | #2,988 |