Kourtney is a distinctive boys' name in United States, ranking #5920 in 2002 with 12 recorded births. The name reached its all-time peak in 2011 with 21 births ranking #4591. Since 1996, the popularity has decreased by 20.0%. In 2002, approximately 1 in every 161,789 boys born was named Kourtney. STABLE Recent data shows the name is currently stable.