Cullen is a distinctive girls' name in United States, ranking #17942 in 2009 with 5 recorded births. The name reached its all-time peak in 2012 with 8 births ranking #12480. Since 1996, the popularity has decreased by 28.6%. In 2009, approximately 1 in every 367,374 girls born was named Cullen. RISING Recent data shows the name is currently rising.