Kirsty is a distinctive girls' name in United States, ranking #18031 in 2013 with 5 recorded births. The name reached its all-time peak in 1996 with 37 births ranking #3188. Since 1996, the popularity has decreased by 86.5%. In 2013, approximately 1 in every 350,883 girls born was named Kirsty. FALLING Recent data shows the name is currently falling.