Kirby is a distinctive girls' name in United States, ranking #4924 in 2015 with 28 recorded births. The name reached its all-time peak in 1996 with 115 births ranking #1433. Since 1996, the popularity has decreased by 75.7%. In 2015, approximately 1 in every 63,738 girls born was named Kirby. RISING Recent data shows the name is currently rising.