Thi is a distinctive girls' name in United States, ranking #12364 in 2009 with 9 recorded births. The name reached its all-time peak in 2007 with 16 births ranking #8063. Since 1996, the popularity has decreased by 18.2%. In 2009, approximately 1 in every 204,097 girls born was named Thi. RISING Recent data shows the name is currently rising.