Keirstin is a distinctive girls' name in United States, ranking #4302 in 1997 with 25 recorded births. The name reached its all-time peak in 1998 with 31 births ranking #3778. Since 1996, the popularity has increased by 31.6%. In 1997, approximately 1 in every 69,626 girls born was named Keirstin. STABLE Recent data shows the name is currently stable.