Keirston is a distinctive girls' name in United States, ranking #19071 in 2007 with 5 recorded births. The name reached its all-time peak in 1996 with 13 births ranking #6926. Since 1996, the popularity has decreased by 61.5%. In 2007, approximately 1 in every 384,490 girls born was named Keirston. FALLING Recent data shows the name is currently falling.