Cortnie is a distinctive girls' name in United States, ranking #8359 in 1999 with 11 recorded births. The name reached its all-time peak in 1996 with 29 births ranking #3742. Since 1996, the popularity has decreased by 62.1%. In 1999, approximately 1 in every 161,253 girls born was named Cortnie. FALLING Recent data shows the name is currently falling.