Kirby is a distinctive boys' name in United States, ranking #2091 in 2003 with 54 recorded births. The name reached its all-time peak in 1996 with 131 births ranking #972. Since 1996, the popularity has decreased by 58.8%. In 2003, approximately 1 in every 36,579 boys born was named Kirby. FALLING Recent data shows the name is currently falling.