Cassidee is a distinctive girls' name in United States, ranking #7899 in 2012 with 15 recorded births. The name reached its all-time peak in 2014 with 38 births ranking #3939. Since 1996, the popularity has decreased by 11.8%. In 2012, approximately 1 in every 117,383 girls born was named Cassidee. FALLING Recent data shows the name is currently falling.