Kellsey is a distinctive girls' name in United States, ranking #12156 in 2007 with 9 recorded births. The name reached its all-time peak in 1996 with 24 births ranking #4386. Since 1996, the popularity has decreased by 62.5%. In 2007, approximately 1 in every 213,605 girls born was named Kellsey. FALLING Recent data shows the name is currently falling.