Kellsey is a distinctive girls' name in United States, ranking #17592 in 2016 with 5 recorded births. This places Kellsey in the bottom 7% of ranked US girls' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 1996 with 24 births ranking #4386. Since 1996, the popularity has decreased by 79.2%. In 2016, approximately 1 in every 354,298 girls born was named Kellsey. FALLING Recent data shows the name is currently falling.