Kirby is a distinctive girls' name in United States, ranking #2550 in 1999 with 56 recorded births. The name reached its all-time peak in 1996 with 115 births ranking #1433. Since 1996, the popularity has decreased by 51.3%. In 1999, approximately 1 in every 31,675 girls born was named Kirby. RISING Recent data shows the name is currently rising.