Kirby is a distinctive boys' name in United States, ranking #2366 in 2006 with 53 recorded births. The name reached its all-time peak in 1996 with 131 births ranking #972. Since 1996, the popularity has decreased by 59.5%. In 2006, approximately 1 in every 38,776 boys born was named Kirby. FALLING Recent data shows the name is currently falling.