Cassi is a distinctive girls' name in United States, ranking #2851 in 1998 with 46 recorded births. The name reached its all-time peak in 1999 with 54 births ranking #2615. Since 1996, the popularity has increased by 27.8%. In 1998, approximately 1 in every 38,411 girls born was named Cassi. FALLING Recent data shows the name is currently falling.