Thea is a popular girls' name in England & Wales, ranking #53 in 2021 with 917 recorded births. The name reached its all-time peak in 2016 with 1,132 births ranking #49. Since 1996, the popularity has increased by 1,428.3%. In 2021, approximately 1 in every 299 girls born was named Thea. FALLING Recent data shows the name is currently falling.