Kourtney is a distinctive girls' name in United States, ranking #1435 in 2016 with 161 recorded births. The name reached its all-time peak in 1996 with 594 births ranking #429. Since 1996, the popularity has decreased by 72.9%. In 2016, approximately 1 in every 11,003 girls born was named Kourtney. FALLING Recent data shows the name is currently falling.