Keirstin is a distinctive girls' name in United States, ranking #6251 in 2008 with 22 recorded births. The name reached its all-time peak in 1998 with 31 births ranking #3778. Since 1996, the popularity has increased by 15.8%. In 2008, approximately 1 in every 85,942 girls born was named Keirstin. STABLE Recent data shows the name is currently stable.