Kourtney is a distinctive boys' name in United States, ranking #8725 in 2000 with 7 recorded births. The name reached its all-time peak in 2011 with 21 births ranking #4591. Since 1996, the popularity has decreased by 53.3%. In 2000, approximately 1 in every 280,562 boys born was named Kourtney. STABLE Recent data shows the name is currently stable.