Kourtney is a distinctive girls' name in England & Wales, ranking #1472 in 2016 with 22 recorded births. The name reached its all-time peak in 2012 with 70 births ranking #600. Since 1996, the popularity has increased by 175.0%. In 2016, approximately 1 in every 13,961 girls born was named Kourtney. FALLING Recent data shows the name is currently falling.