The baby name Alethia appears in baby name data for the United States from 1912 to 1983. It was most popular in 1930 with 47 babies given the name.
In the later years of this period, Alethia has become more popular compared with earlier years.
| Year | Count |
|---|---|
| 1912 | 7 |
| 1913 | 5 |
| 1915 | 5 |
| 1916 | 8 |
| 1917 | 6 |
| 1918 | 10 |
| 1919 | 10 |
| 1921 | 7 |
| 1922 | 10 |
| 1923 | 13 |
| 1924 | 10 |
| 1926 | 10 |
| 1927 | 5 |
| 1928 | 30 |
| 1929 | 5 |
| 1930 | 47 |
| 1931 | 7 |
| 1932 | 21 |
| 1933 | 8 |
| 1935 | 6 |
| 1936 | 5 |
| 1938 | 8 |
| 1939 | 6 |
| 1940 | 6 |
| 1941 | 10 |
| 1943 | 6 |
| 1944 | 5 |
| 1946 | 11 |
| 1947 | 8 |
| 1948 | 6 |
| 1950 | 6 |
| 1951 | 11 |
| 1953 | 12 |
| 1956 | 14 |
| 1959 | 12 |
| 1961 | 15 |
| 1962 | 14 |
| 1963 | 10 |
| 1964 | 18 |
| 1965 | 20 |
| 1967 | 15 |
| 1968 | 27 |
| 1969 | 14 |
| 1970 | 21 |
| 1971 | 10 |
| 1972 | 5 |
| 1973 | 27 |
| 1974 | 5 |
| 1980 | 14 |
| 1981 | 10 |
| 1983 | 10 |