Kullen is a distinctive boys' name in United States, ranking #3974 in 2020 with 26 recorded births. This places Kullen in the top 28% of ranked US boys' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2012 with 64 births ranking #2119. Since 1996, the popularity has increased by 62.5%. In 2020, approximately 1 in every 66,349 boys born was named Kullen. FALLING Recent data shows the name is currently falling.