Thy is a distinctive girls' name in United States, ranking #12188 in 2010 with 9 recorded births. The name reached its all-time peak in 2002 with 17 births ranking #6673. Since 1996, the popularity has increased by 28.6%. In 2010, approximately 1 in every 197,481 girls born was named Thy. STABLE Recent data shows the name is currently stable.