Cassey is a distinctive girls' name in United States, ranking #7145 in 2004 with 16 recorded births. The name reached its all-time peak in 1998 with 48 births ranking #2764. Since 1996, the popularity has decreased by 56.8%. In 2004, approximately 1 in every 114,758 girls born was named Cassey. FALLING Recent data shows the name is currently falling.