In 2025, 86 US girls were named Theadora, making it the 2,170th most common girls’ name of the year, down 278 places from #1,892 in 2024. That is 20 fewer than the 106 girls named Theadora in 2024. Its best rank for girls was #1,892, reached in 2024. That year also had the most girls given the name: 106. For comparison, it was #4,580 in 2015 and #3,219 in 1950.
Social Security card records list Theadora in 89 years of the 146 from 1880 to 2025, starting in 1906 with 5 babies. In all, 1,507 US babies have been given the name, all of them girls. Its busiest decade was the 2020s, with 513 babies named Theadora.
Over the 10 years from 2016 to 2025, 700 US girls were named Theadora; the busiest of those years was 2024, with 106. In 2025 that was about 1 in 18,689 of the girls in SSA’s list for the year.
Among the states, Theadora ranked highest in Wisconsin in 2025, at #919 for girls there. It was not in the top 100 of any state. Related spellings in the SSA files include Theodora (12,703 babies since 1880).