Kourtney is a distinctive boys' name in United States, ranking #6063 in 2005 with 13 recorded births. The name reached its all-time peak in 2011 with 21 births ranking #4591. Since 1996, the popularity has decreased by 13.3%. In 2005, approximately 1 in every 153,627 boys born was named Kourtney. STABLE Recent data shows the name is currently stable.