Kellen is a distinctive girls' name in United States, ranking #4358 in 2003 with 30 recorded births. The name reached its all-time peak in 1996 with 37 births ranking #3186. Since 1996, the popularity has decreased by 18.9%. In 2003, approximately 1 in every 60,902 girls born was named Kellen. FALLING Recent data shows the name is currently falling.