In 2025, 171 US girls were named Althea, making it the 1,299th most common girls’ name of the year, up 99 places from #1,398 in 2024. That is 11 more than the 160 girls named Althea in 2024. Its best rank for girls was #356, reached in 1920. The most girls given the name in a single year was 388, in 1956. For comparison, it was #1,644 in 2015 and #462 in 1950.
Social Security card records list Althea in every one of the 146 years from 1880 to 2025; in 1880 there were 9 babies with the name. In all, 17,985 US babies have been given the name, all of them girls. Its busiest decade was the 1950s, with 3,015 babies named Althea.
Over the 10 years from 2016 to 2025, 1,585 US girls were named Althea; the busiest of those years was 2022, with 175. In 2025 that was about 1 in 9,399 of the girls in SSA’s list for the year.
Among the states, Althea ranked highest in Oregon in 2025, at #628 for girls there. It was not in the top 100 of any state. Rarer spellings such as Altie, Althia and Altheia are summarised on this page. The open nickname list we use links it to Ally.
Meaning
Meaning not yet researched.
We publish a meaning only with a cited source and a confidence label, and never generate one. Meanings are being researched for the most common names first.
Wikidata records this spelling as a given name in Old English. That is where the name is used, not necessarily where it comes from.