Cassie is a moderately popular girls' name in United States, ranking #450 in 2001 with 619 recorded births. This places Cassie in the top 3% of ranked US girls' names for the year. Its actual usage is classified as Moderately Popular. The name reached its all-time peak in 1998 with 979 births ranking #310. In 2001, approximately 1 in every 2,909 girls born was named Cassie. STABLE Recent data shows the name is currently stable.