Katy is a distinctive girls' name in United States, ranking #830 in 1998 with 257 recorded births. This places Katy in the top 5% of ranked US girls' names for the year. Its actual usage is classified as Uncommon. The name reached its all-time peak in 1997 with 279 births ranking #758. In 1998, approximately 1 in every 6,875 girls born was named Katy. FALLING Recent data shows the name is currently falling.