Kirsty is a distinctive girls' name in United States, ranking #6223 in 1998 with 16 recorded births. The name reached its all-time peak in 1996 with 37 births ranking #3188. Since 1996, the popularity has decreased by 56.8%. In 1998, approximately 1 in every 110,431 girls born was named Kirsty. FALLING Recent data shows the name is currently falling.