Cassius is a distinctive boys' name in United States, ranking #567 in 2024 with 516 recorded births. The name reached its all-time peak in 2021 with 607 births ranking #485. Since 1996, the popularity has increased by 1,128.6%. In 2024, approximately 1 in every 3,324 boys born was named Cassius. STABLE Recent data shows the name is currently stable.