Keirston is a distinctive girls' name in United States, ranking #8048 in 1997 with 11 recorded births. The name reached its all-time peak in 1996 with 13 births ranking #6926. Since 1996, the popularity has decreased by 15.4%. In 1997, approximately 1 in every 158,242 girls born was named Keirston. FALLING Recent data shows the name is currently falling.