Cassity is a distinctive girls' name in United States, ranking #16228 in 2003 with 5 recorded births. The name reached its all-time peak in 1998 with 27 births ranking #4155. Since 1996, the popularity has decreased by 66.7%. In 2003, approximately 1 in every 365,410 girls born was named Cassity. FALLING Recent data shows the name is currently falling.