Kullen is a distinctive boys' name in United States, ranking #4493 in 2000 with 17 recorded births. This places Kullen in the top 37% 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. In 2000, approximately 1 in every 115,525 boys born was named Kullen. FALLING Recent data shows the name is currently falling.