Kellsey is a distinctive girls' name in United States, ranking #9440 in 2011 with 12 recorded births. The name reached its all-time peak in 1996 with 24 births ranking #4386. Since 1996, the popularity has decreased by 50.0%. In 2011, approximately 1 in every 146,567 girls born was named Kellsey. FALLING Recent data shows the name is currently falling.