Cassidee is a distinctive girls' name in United States, ranking #6229 in 2016 with 20 recorded births. The name reached its all-time peak in 2014 with 38 births ranking #3939. Since 1996, the popularity has increased by 17.6%. In 2016, approximately 1 in every 88,574 girls born was named Cassidee. FALLING Recent data shows the name is currently falling.