The baby name Birtha appears in baby name data for the United States from 1910 to 1954. It was most popular in 1926 with 49 babies given the name.
In the later years of this period, Birtha has become less common than it once was.
| Year | Count |
|---|---|
| 1910 | 29 |
| 1911 | 6 |
| 1912 | 12 |
| 1913 | 12 |
| 1914 | 16 |
| 1915 | 22 |
| 1916 | 23 |
| 1917 | 15 |
| 1918 | 36 |
| 1919 | 27 |
| 1920 | 34 |
| 1921 | 30 |
| 1922 | 42 |
| 1923 | 23 |
| 1924 | 30 |
| 1925 | 26 |
| 1926 | 49 |
| 1927 | 39 |
| 1928 | 38 |
| 1929 | 42 |
| 1930 | 26 |
| 1931 | 20 |
| 1932 | 23 |
| 1933 | 19 |
| 1934 | 18 |
| 1935 | 13 |
| 1936 | 9 |
| 1937 | 5 |
| 1938 | 5 |
| 1939 | 8 |
| 1941 | 9 |
| 1942 | 17 |
| 1943 | 5 |
| 1944 | 20 |
| 1945 | 8 |
| 1947 | 9 |
| 1948 | 5 |
| 1949 | 8 |
| 1950 | 9 |
| 1951 | 6 |
| 1952 | 7 |
| 1953 | 7 |
| 1954 | 5 |