Cassie is a distinctive girls' name in United States, ranking #1150 in 2010 with 212 recorded births. The name reached its all-time peak in 1998 with 979 births ranking #310. Since 1996, the popularity has decreased by 67.5%. In 2010, approximately 1 in every 8,384 girls born was named Cassie. STABLE Recent data shows the name is currently stable.