Keiston is a distinctive boys' name in United States, ranking #12338 in 2004 with 5 recorded births. This places Keiston in the bottom 7% of ranked US boys' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2013 with 17 births ranking #5289. In 2004, approximately 1 in every 396,960 boys born was named Keiston. STABLE Recent data shows the name is currently stable.