Kierstyn is a distinctive girls' name in United States, ranking #3736 in 2015 with 41 recorded births. The name reached its all-time peak in 2007 with 135 births ranking #1649. Since 1996, the popularity has decreased by 49.4%. In 2015, approximately 1 in every 43,528 girls born was named Kierstyn. RISING Recent data shows the name is currently rising.