Cullan is a distinctive boys' name in United States, ranking #4568 in 2012 with 21 recorded births. The name reached its all-time peak in 2000 with 21 births ranking #3795. Since 1996, the popularity has increased by 61.5%. In 2012, approximately 1 in every 90,315 boys born was named Cullan. STABLE Recent data shows the name is currently stable.