Kierstyn is a distinctive girls' name in United States, ranking #1653 in 2009 with 135 recorded births. The name reached its all-time peak in 2007 with 135 births ranking #1649. Since 1996, the popularity has increased by 66.7%. In 2009, approximately 1 in every 13,606 girls born was named Kierstyn. RISING Recent data shows the name is currently rising.