Cullan is a distinctive boys' name in United States, ranking #5182 in 2001 with 14 recorded births. This places Cullan in the top 42% 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. In 2001, approximately 1 in every 138,774 boys born was named Cullan. STABLE Recent data shows the name is currently stable.