Cassie is a distinctive girls' name in England & Wales, ranking #514 in 2025 with 78 recorded births. This places Cassie in the top 7% of ranked UK girls' names for the year. Its actual usage is classified as Uncommon. The name reached its all-time peak in 2008 with 133 births ranking #336. In 2025, approximately 1 in every 3,247 girls born was named Cassie. FALLING Recent data shows the name is currently falling.