Katy is a distinctive girls' name in United States, ranking #1290 in 2010 with 185 recorded births. The name reached its all-time peak in 1997 with 279 births ranking #758. Since 1996, the popularity has decreased by 32.5%. In 2010, approximately 1 in every 9,607 girls born was named Katy. FALLING Recent data shows the name is currently falling.