Kierstyn is a distinctive girls' name in United States, ranking #1729 in 2006 with 121 recorded births. The name reached its all-time peak in 2007 with 135 births ranking #1649. Since 1996, the popularity has increased by 49.4%. In 2006, approximately 1 in every 15,711 girls born was named Kierstyn. RISING Recent data shows the name is currently rising.