Kellen is a distinctive girls' name in United States, ranking #3866 in 2004 with 37 recorded births. This places Kellen in the top 21% of ranked US girls' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 1996 with 37 births ranking #3186. In 2004, approximately 1 in every 49,625 girls born was named Kellen. FALLING Recent data shows the name is currently falling.