Kierstyn is a distinctive girls' name in United States, ranking #1670 in 1999 with 99 recorded births. This places Kierstyn in the top 10% of ranked US girls' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2007 with 135 births ranking #1649. Since 1996, the popularity has increased by 22.2%. In 1999, approximately 1 in every 17,917 girls born was named Kierstyn. RISING Recent data shows the name is currently rising.