Kellen is a distinctive girls' name in United States, ranking #5801 in 2009 with 24 recorded births. The name reached its all-time peak in 1996 with 37 births ranking #3186. Since 1996, the popularity has decreased by 35.1%. In 2009, approximately 1 in every 76,536 girls born was named Kellen. FALLING Recent data shows the name is currently falling.