Kagen is a distinctive boys' name in United States, ranking #2895 in 2007 with 41 recorded births. The name reached its all-time peak in 2007 with 41 births ranking #2895. Since 1996, the popularity has increased by 115.8%. In 2007, approximately 1 in every 50,615 boys born was named Kagen. FALLING Recent data shows the name is currently falling.