Thea is a moderately popular girls' name in United States, ranking #348 in 2024 with 893 recorded births. The name reached its all-time peak in 2018 with 1,208 births ranking #273. Since 1996, the popularity has increased by 820.6%. In 2024, approximately 1 in every 1,806 girls born was named Thea. FALLING Recent data shows the name is currently falling.