Kierstynn is a distinctive girls' name in United States, ranking #14478 in 2001 with 6 recorded births. The name reached its all-time peak in 2007 with 9 births ranking #12173. Since 1996, the popularity has decreased by 25.0%. In 2001, approximately 1 in every 300,093 girls born was named Kierstynn. FALLING Recent data shows the name is currently falling.