Kirby is a distinctive girls' name in United States, ranking #2881 in 2000 with 50 recorded births. The name reached its all-time peak in 1996 with 115 births ranking #1433. Since 1996, the popularity has decreased by 56.5%. In 2000, approximately 1 in every 36,319 girls born was named Kirby. RISING Recent data shows the name is currently rising.