Cassidee is a distinctive girls' name in United States, ranking #9970 in 2018 with 10 recorded births. The name reached its all-time peak in 2014 with 38 births ranking #3939. Since 1996, the popularity has decreased by 41.2%. In 2018, approximately 1 in every 170,042 girls born was named Cassidee. FALLING Recent data shows the name is currently falling.