Kallen is a distinctive boys' name in United States, ranking #2322 in 2007 with 56 recorded births. This places Kallen in the top 16% of ranked US boys' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2014 with 159 births ranking #1177. Since 1996, the popularity has increased by 250.0%. In 2007, approximately 1 in every 37,058 boys born was named Kallen. STABLE Recent data shows the name is currently stable.