Kirby is a distinctive boys' name in United States, ranking #1491 in 2001 with 82 recorded births. The name reached its all-time peak in 1996 with 131 births ranking #972. Since 1996, the popularity has decreased by 37.4%. In 2001, approximately 1 in every 23,693 boys born was named Kirby. FALLING Recent data shows the name is currently falling.