Kirsty is a distinctive girls' name in United States, ranking #6680 in 1999 with 15 recorded births. The name reached its all-time peak in 1996 with 37 births ranking #3188. Since 1996, the popularity has decreased by 59.5%. In 1999, approximately 1 in every 118,252 girls born was named Kirsty. FALLING Recent data shows the name is currently falling.