Katy is a distinctive girls' name in United States, ranking #1175 in 2007 with 217 recorded births. The name reached its all-time peak in 1997 with 279 births ranking #758. Since 1996, the popularity has decreased by 20.8%. In 2007, approximately 1 in every 8,859 girls born was named Katy. FALLING Recent data shows the name is currently falling.