Cassey is a distinctive girls' name in United States, ranking #10594 in 2012 with 10 recorded births. The name reached its all-time peak in 1998 with 48 births ranking #2764. Since 1996, the popularity has decreased by 73.0%. In 2012, approximately 1 in every 176,074 girls born was named Cassey. FALLING Recent data shows the name is currently falling.