Cassity is a distinctive girls' name in United States, ranking #5179 in 2000 with 22 recorded births. The name reached its all-time peak in 1998 with 27 births ranking #4155. Since 1996, the popularity has increased by 46.7%. In 2000, approximately 1 in every 82,544 girls born was named Cassity. FALLING Recent data shows the name is currently falling.