Kassius is a distinctive boys' name in United States, ranking #2243 in 2025 with 63 recorded births. This places Kassius in the top 16% of ranked US boys' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2022 with 124 births ranking #1462. In 2025, approximately 1 in every 27,112 boys born was named Kassius. FALLING Recent data shows the name is currently falling.