Lethia is a rare variant of Letha that was most common in the 1910s and has all but disappeared.
Lethia is a girl name. It last appears in U.S. records in 2004. Lethia was first reported in SSA data in 1886 and peaked in 1917 (24 births).
| Year | U.S. births | U.S. + territories | Rank |
|---|---|---|---|
| 2004 | 6 | 6 | #15,259 |
| 1986 | 6 | — | #10,266 |
| 1978 | 5 | — | #10,673 |
| 1977 | 6 | — | #9,110 |
| 1976 | 8 | — | #6,982 |
| 1975 | 8 | — | #6,852 |
| 1973 | 10 | — | #5,388 |
| 1971 | 9 | — | #5,792 |
| 1970 | 7 | — | #6,733 |
| 1969 | 15 | — | #3,707 |
| 1968 | 10 | — | #4,647 |
| 1967 | 13 | — | #3,762 |
| 1966 | 9 | — | #4,695 |
| 1965 | 13 | — | #3,652 |
| 1964 | 9 | — | #4,812 |
| 1963 | 16 | — | #3,262 |
| 1962 | 13 | — | #3,689 |
| 1961 | 13 | — | #3,701 |
| 1960 | 9 | — | #4,626 |
| 1959 | 12 | — | #3,725 |
| 1958 | 11 | — | #3,839 |
| 1957 | 11 | — | #3,821 |
| 1955 | 11 | — | #3,681 |
| 1954 | 16 | — | #2,844 |
| 1953 | 10 | — | #3,851 |
| 1952 | 9 | — | #3,987 |
| 1951 | 13 | — | #3,029 |
| 1950 | 19 | — | #2,303 |
| 1949 | 11 | — | #3,293 |
| 1948 | 8 | — | #4,066 |
| 1947 | 6 | — | #5,045 |
| 1946 | 13 | — | #2,815 |
| 1945 | 9 | — | #3,276 |
| 1944 | 9 | — | #3,259 |
| 1943 | 11 | — | #2,966 |
| 1942 | 15 | — | #2,361 |
| 1941 | 11 | — | #2,765 |
| 1940 | 9 | — | #3,100 |
| 1939 | 10 | — | #2,831 |
| 1938 | 9 | — | #3,069 |
| 1937 | 11 | — | #2,648 |
| 1936 | 8 | — | #3,266 |
| 1935 | 5 | — | #4,584 |
| 1934 | 14 | — | #2,243 |
| 1933 | 6 | — | #3,999 |
| 1932 | 15 | — | #2,190 |
| 1931 | 17 | — | #1,989 |
| 1930 | 12 | — | #2,619 |
| 1929 | 11 | — | #2,846 |
| 1928 | 10 | — | #3,061 |
| 1927 | 17 | — | #2,212 |
| 1926 | 15 | — | #2,418 |
| 1925 | 16 | — | #2,336 |
| 1924 | 16 | — | #2,373 |
| 1923 | 21 | — | #1,922 |
| 1922 | 17 | — | #2,230 |
| 1921 | 18 | — | #2,165 |
| 1920 | 9 | — | #3,482 |
| 1919 | 19 | — | #1,958 |
| 1918 | 23 | — | #1,730 |
| 1917 | 24 | — | #1,577 |
| 1916 | 18 | — | #1,913 |
| 1915 | 16 | — | #2,006 |
| 1914 | 23 | — | #1,323 |
| 1913 | 14 | — | #1,638 |
| 1912 | 11 | — | #1,787 |
| 1911 | 9 | — | #1,726 |
| 1910 | 13 | — | #1,299 |
| 1909 | 10 | — | #1,424 |
| 1908 | 11 | — | #1,311 |
| 1907 | 5 | — | #2,235 |
| 1906 | 5 | — | #2,096 |
| 1905 | 5 | — | #2,095 |
| 1904 | 11 | — | #1,143 |
| 1903 | 11 | — | #1,106 |
| 1902 | 7 | — | #1,526 |
| 1901 | 6 | — | #1,576 |
| 1900 | 12 | — | #1,140 |
| 1899 | 11 | — | #1,009 |
| 1898 | 8 | — | #1,322 |
| 1897 | 7 | — | #1,330 |
| 1896 | 7 | — | #1,363 |
| 1895 | 9 | — | #1,169 |
| 1894 | 6 | — | #1,426 |
| 1893 | 11 | — | #936 |
| 1892 | 5 | — | #1,561 |
| 1890 | 7 | — | #1,156 |
| 1886 | 7 | — | #950 |