Cassiopeia is a distinctive girls' name in United States, ranking #13837 in 2001 with 6 recorded births. The name reached its all-time peak in 2022 with 18 births ranking #6502. Since 1996, the popularity has decreased by 14.3%. In 2001, approximately 1 in every 300,093 girls born was named Cassiopeia. FALLING Recent data shows the name is currently falling.