Kierstyn is a distinctive girls' name in United States, ranking #2042 in 2001 with 83 recorded births. This places Kierstyn in the top 11% 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. In 2001, approximately 1 in every 21,693 girls born was named Kierstyn. RISING Recent data shows the name is currently rising.