In 2025, 35 US girls were named Theodosia, making it the 4,159th most common girls’ name of the year, up 607 places from #4,766 in 2024. That is 6 more than the 29 girls named Theodosia in 2024. Its best rank for girls was #576, reached in 1880. The most girls given the name in a single year was 45, in 1918. For comparison, it was unranked (under five girls) in 2015 and #2,768 in 1950.
Social Security card records list Theodosia in 115 years of the 146 from 1880 to 2025, starting in 1880 with 10 babies. In all, 1,705 US babies have been given the name, all of them girls. Its busiest decade was the 1920s, with 300 babies named Theodosia.
Over the 10 years from 2016 to 2025, 227 US girls were named Theodosia; the busiest of those years was 2021, with 36. In 2025 that was about 1 in 45,922 of the girls in SSA’s list for the year.
The open nickname list we use links it to Dosia, Theo and Theodosius.