Kirby is a distinctive boys' name in United States, ranking #2566 in 2008 with 49 recorded births. The name reached its all-time peak in 1996 with 131 births ranking #972. Since 1996, the popularity has decreased by 62.6%. In 2008, approximately 1 in every 41,632 boys born was named Kirby. FALLING Recent data shows the name is currently falling.