Cassey is a distinctive girls' name in United States, ranking #12458 in 2021 with 7 recorded births. The name reached its all-time peak in 1998 with 48 births ranking #2764. Since 1996, the popularity has decreased by 81.1%. In 2021, approximately 1 in every 234,245 girls born was named Cassey. FALLING Recent data shows the name is currently falling.