Kallen is a distinctive boys' name in United States, ranking #1242 in 2015 with 147 recorded births. The name reached its all-time peak in 2014 with 159 births ranking #1177. Since 1996, the popularity has increased by 818.8%. In 2015, approximately 1 in every 13,036 boys born was named Kallen. STABLE Recent data shows the name is currently stable.