Cassius is a moderately popular boys' name in England & Wales, ranking #283 in 2024 with 160 recorded births. The name reached its all-time peak in 2023 with 174 births ranking #263. Since 1996, the popularity has increased by 1,677.8%. In 2024, approximately 1 in every 1,736 boys born was named Cassius. STABLE Recent data shows the name is currently stable.