Keirstin is a distinctive girls' name in United States, ranking #5523 in 2005 with 23 recorded births. The name reached its all-time peak in 1998 with 31 births ranking #3778. Since 1996, the popularity has increased by 21.1%. In 2005, approximately 1 in every 80,335 girls born was named Keirstin. STABLE Recent data shows the name is currently stable.