Kirby is a distinctive boys' name in United States, ranking #2127 in 2007 with 64 recorded births. The name reached its all-time peak in 1996 with 131 births ranking #972. Since 1996, the popularity has decreased by 51.1%. In 2007, approximately 1 in every 32,426 boys born was named Kirby. FALLING Recent data shows the name is currently falling.