Kierstan is a distinctive girls' name in United States, ranking #9622 in 2006 with 12 recorded births. The name reached its all-time peak in 1998 with 31 births ranking #3782. Since 1996, the popularity has decreased by 55.6%. In 2006, approximately 1 in every 158,423 girls born was named Kierstan. FALLING Recent data shows the name is currently falling.