Mckay is a distinctive boys' name in United States, ranking #1541 in 1999 with 73 recorded births. The name reached its all-time peak in 1996 with 84 births ranking #1312. Since 1996, the popularity has decreased by 13.1%. In 1999, approximately 1 in every 26,303 boys born was named Mckay. STABLE Recent data shows the name is currently stable.