The baby name Retha appears in baby name data for the United States from 1910 to 1974. It was most popular in 1927 with 322 babies given the name.
In the later years of this period, Retha has become less common than it once was.
| Year | Count |
|---|---|
| 1910 | 41 |
| 1911 | 64 |
| 1912 | 80 |
| 1913 | 80 |
| 1914 | 61 |
| 1915 | 171 |
| 1916 | 187 |
| 1917 | 233 |
| 1918 | 256 |
| 1919 | 241 |
| 1920 | 210 |
| 1921 | 236 |
| 1922 | 233 |
| 1923 | 203 |
| 1924 | 244 |
| 1925 | 258 |
| 1926 | 307 |
| 1927 | 322 |
| 1928 | 267 |
| 1929 | 272 |
| 1930 | 268 |
| 1931 | 310 |
| 1932 | 254 |
| 1933 | 315 |
| 1934 | 278 |
| 1935 | 308 |
| 1936 | 225 |
| 1937 | 268 |
| 1938 | 223 |
| 1939 | 210 |
| 1940 | 197 |
| 1941 | 174 |
| 1942 | 162 |
| 1943 | 200 |
| 1944 | 127 |
| 1945 | 152 |
| 1946 | 155 |
| 1947 | 136 |
| 1948 | 164 |
| 1949 | 173 |
| 1950 | 225 |
| 1951 | 208 |
| 1952 | 192 |
| 1953 | 168 |
| 1954 | 192 |
| 1955 | 174 |
| 1956 | 153 |
| 1957 | 153 |
| 1958 | 158 |
| 1959 | 110 |
| 1960 | 126 |
| 1961 | 129 |
| 1962 | 111 |
| 1963 | 69 |
| 1964 | 48 |
| 1965 | 52 |
| 1966 | 22 |
| 1967 | 64 |
| 1968 | 23 |
| 1969 | 28 |
| 1970 | 5 |
| 1971 | 5 |
| 1973 | 10 |
| 1974 | 10 |