Kierstan is a distinctive girls' name in United States, ranking #7258 in 2007 with 18 recorded births. The name reached its all-time peak in 1998 with 31 births ranking #3782. Since 1996, the popularity has decreased by 33.3%. In 2007, approximately 1 in every 106,803 girls born was named Kierstan. FALLING Recent data shows the name is currently falling.