Cassie is a distinctive girls' name in England & Wales, ranking #593 in 2001 with 45 recorded births. The name reached its all-time peak in 2008 with 133 births ranking #336. Since 1996, the popularity has decreased by 47.1%. In 2001, approximately 1 in every 5,955 girls born was named Cassie. FALLING Recent data shows the name is currently falling.