Dorothea ranked #3737 among U.S. baby names in 2024. Since 1880, 34,314 babies have been named Dorothea, peaking in 1920 with 1,110 births. The 1920s were its biggest decade, with 8,518 births. Dorothea is on the rise, up about 49% over the past five years. It is predominantly a girls' name.