Kirby is a distinctive boys' name in United States, ranking #3097 in 2021 with 39 recorded births. The name reached its all-time peak in 1996 with 131 births ranking #972. Since 1996, the popularity has decreased by 70.2%. In 2021, approximately 1 in every 44,827 boys born was named Kirby. FALLING Recent data shows the name is currently falling.