Cassiopeia is a distinctive girls' name in United States, ranking #17298 in 2011 with 5 recorded births. The name reached its all-time peak in 2022 with 18 births ranking #6502. Since 1996, the popularity has decreased by 28.6%. In 2011, approximately 1 in every 351,761 girls born was named Cassiopeia. FALLING Recent data shows the name is currently falling.