Cassity is a distinctive girls' name in United States, ranking #12505 in 2010 with 8 recorded births. The name reached its all-time peak in 1998 with 27 births ranking #4155. Since 1996, the popularity has decreased by 46.7%. In 2010, approximately 1 in every 222,166 girls born was named Cassity. FALLING Recent data shows the name is currently falling.