Kirby is a distinctive boys' name in United States, ranking #2740 in 2017 with 45 recorded births. The name reached its all-time peak in 1996 with 131 births ranking #972. Since 1996, the popularity has decreased by 65.6%. In 2017, approximately 1 in every 41,118 boys born was named Kirby. FALLING Recent data shows the name is currently falling.