Kellen is a distinctive girls' name in United States, ranking #6540 in 2002 with 17 recorded births. The name reached its all-time peak in 1996 with 37 births ranking #3186. Since 1996, the popularity has decreased by 54.1%. In 2002, approximately 1 in every 105,695 girls born was named Kellen. FALLING Recent data shows the name is currently falling.