Thea is a popular girls' name in England & Wales, ranking #66 in 2024 with 686 recorded births. The name reached its all-time peak in 2016 with 1,132 births ranking #49. Since 1996, the popularity has increased by 1,043.3%. In 2024, approximately 1 in every 376 girls born was named Thea. FALLING Recent data shows the name is currently falling.