Cassiopeia is a distinctive girls' name in United States, ranking #7022 in 2021 with 16 recorded births. The name reached its all-time peak in 2022 with 18 births ranking #6502. Since 1996, the popularity has increased by 128.6%. In 2021, approximately 1 in every 102,482 girls born was named Cassiopeia. FALLING Recent data shows the name is currently falling.