Kourtney is a distinctive girls' name in United States, ranking #1869 in 2019 with 108 recorded births. The name reached its all-time peak in 1996 with 594 births ranking #429. Since 1996, the popularity has decreased by 81.8%. In 2019, approximately 1 in every 15,533 girls born was named Kourtney. FALLING Recent data shows the name is currently falling.