Kourtney is a distinctive girls' name in United States, ranking #2869 in 2021 with 59 recorded births. The name reached its all-time peak in 1996 with 594 births ranking #429. Since 1996, the popularity has decreased by 90.1%. In 2021, approximately 1 in every 27,792 girls born was named Kourtney. FALLING Recent data shows the name is currently falling.