Katy is a distinctive girls' name in England & Wales, ranking #4201 in 2025 with 5 recorded births. This places Katy in the bottom 45% of ranked UK girls' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 1996 with 413 births ranking #111. Since 1996, the popularity has decreased by 98.8%. In 2025, approximately 1 in every 50,656 girls born was named Katy. FALLING Recent data shows the name is currently falling.