Kierstan is a distinctive girls' name in United States, ranking #14318 in 2020 with 6 recorded births. The name reached its all-time peak in 1998 with 31 births ranking #3782. Since 1996, the popularity has decreased by 77.8%. In 2020, approximately 1 in every 269,252 girls born was named Kierstan. FALLING Recent data shows the name is currently falling.