Kierstan is a distinctive girls' name in United States, ranking #5336 in 1999 with 20 recorded births. The name reached its all-time peak in 1998 with 31 births ranking #3782. Since 1996, the popularity has decreased by 25.9%. In 1999, approximately 1 in every 88,689 girls born was named Kierstan. FALLING Recent data shows the name is currently falling.