Kirby is a distinctive boys' name in United States, ranking #1108 in 1997 with 115 recorded births. The name reached its all-time peak in 1996 with 131 births ranking #972. Since 1996, the popularity has decreased by 12.2%. In 1997, approximately 1 in every 16,392 boys born was named Kirby. FALLING Recent data shows the name is currently falling.