Cullan is a distinctive boys' name in United States, ranking #9157 in 2008 with 8 recorded births. This places Cullan in the bottom 37% of ranked US boys' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2000 with 21 births ranking #3795. Since 1996, the popularity has decreased by 38.5%. In 2008, approximately 1 in every 254,993 boys born was named Cullan. STABLE Recent data shows the name is currently stable.