Cassey is a distinctive girls' name in United States, ranking #14952 in 2014 with 6 recorded births. The name reached its all-time peak in 1998 with 48 births ranking #2764. Since 1996, the popularity has decreased by 83.8%. In 2014, approximately 1 in every 297,656 girls born was named Cassey. FALLING Recent data shows the name is currently falling.