Fewer than five US girls were named Letha in 2025, so it does not appear in that year’s SSA list for girls. Its best rank for girls was #231, reached in 1903. The most girls given the name in a single year was 473, in 1918. For comparison, it was #12,490 in 2015 and #673 in 1950.
Social Security card records list Letha in 133 years of the 146 from 1880 to 2025, starting in 1880 with 25 babies. In all, 19,162 US babies have been given the name, 99.8% of them girls and 0.1% boys. Its busiest decade was the 1920s, with 3,780 babies named Letha.
Over the 10 years from 2016 to 2025, 20 US girls were named Letha; the busiest of those years was 2016, with 9.
Related spellings in the SSA files include Leta (11,944 babies since 1880), Leota (10,447 babies since 1880), Leatha (6,023 babies since 1880) and Lita (4,437 babies since 1880). Rarer spellings such as Letta, Leitha and Leita are summarised on this page.