Kourtney is a distinctive girls' name in United States, ranking #2122 in 2018 with 90 recorded births. The name reached its all-time peak in 1996 with 594 births ranking #429. Since 1996, the popularity has decreased by 84.8%. In 2018, approximately 1 in every 18,894 girls born was named Kourtney. FALLING Recent data shows the name is currently falling.