Kay is a distinctive girls' name in England & Wales, ranking #1862 in 2006 with 12 recorded births. The name reached its all-time peak in 1996 with 66 births ranking #448. Since 1996, the popularity has decreased by 81.8%. In 2006, approximately 1 in every 24,937 girls born was named Kay. STABLE Recent data shows the name is currently stable.