Kirby is a distinctive boys' name in United States, ranking #2491 in 2010 with 50 recorded births. The name reached its all-time peak in 1996 with 131 births ranking #972. Since 1996, the popularity has decreased by 61.8%. In 2010, approximately 1 in every 38,368 boys born was named Kirby. FALLING Recent data shows the name is currently falling.