Kirby is a distinctive boys' name in United States, ranking #2531 in 2018 with 51 recorded births. The name reached its all-time peak in 1996 with 131 births ranking #972. Since 1996, the popularity has decreased by 61.1%. In 2018, approximately 1 in every 35,598 boys born was named Kirby. FALLING Recent data shows the name is currently falling.