Thy is a distinctive girls' name in United States, ranking #8840 in 2005 with 13 recorded births. The name reached its all-time peak in 2002 with 17 births ranking #6673. Since 1996, the popularity has increased by 85.7%. In 2005, approximately 1 in every 142,131 girls born was named Thy. STABLE Recent data shows the name is currently stable.