Kellen is a distinctive girls' name in United States, ranking #4182 in 1997 with 26 recorded births. The name reached its all-time peak in 1996 with 37 births ranking #3186. Since 1996, the popularity has decreased by 29.7%. In 1997, approximately 1 in every 66,948 girls born was named Kellen. FALLING Recent data shows the name is currently falling.