Kourtney is a distinctive girls' name in United States, ranking #1020 in 2014 with 256 recorded births. The name reached its all-time peak in 1996 with 594 births ranking #429. Since 1996, the popularity has decreased by 56.9%. In 2014, approximately 1 in every 6,976 girls born was named Kourtney. FALLING Recent data shows the name is currently falling.