Dorthea is a distinctive girls' name in United States, ranking #12247 in 2025 with 7 recorded births. The name reached its all-time peak in 1996 with 10 births ranking #8337. Since 1996, the popularity has decreased by 30.0%. In 2025, approximately 1 in every 229,610 girls born was named Dorthea. RISING Recent data shows the name is currently rising.