Thi is a distinctive girls' name in United States, ranking #8159 in 2001 with 13 recorded births. The name reached its all-time peak in 2007 with 16 births ranking #8063. Since 1996, the popularity has increased by 18.2%. In 2001, approximately 1 in every 138,505 girls born was named Thi. RISING Recent data shows the name is currently rising.