Kourtney is a distinctive boys' name in United States, ranking #3537 in 1997 with 20 recorded births. The name reached its all-time peak in 2011 with 21 births ranking #4591. Since 1996, the popularity has increased by 33.3%. In 1997, approximately 1 in every 94,255 boys born was named Kourtney. STABLE Recent data shows the name is currently stable.