Kellsey is a distinctive girls' name in United States, ranking #11180 in 2004 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 2004, approximately 1 in every 204,013 girls born was named Kellsey. FALLING Recent data shows the name is currently falling.