Kay is a distinctive girls' name in England & Wales, ranking #1083 in 2003 with 21 recorded births. The name reached its all-time peak in 1996 with 66 births ranking #448. Since 1996, the popularity has decreased by 68.2%. In 2003, approximately 1 in every 13,270 girls born was named Kay. STABLE Recent data shows the name is currently stable.