Kierstyn is a distinctive girls' name in United States, ranking #1840 in 2008 with 117 recorded births. The name reached its all-time peak in 2007 with 135 births ranking #1649. Since 1996, the popularity has increased by 44.4%. In 2008, approximately 1 in every 16,160 girls born was named Kierstyn. RISING Recent data shows the name is currently rising.