Marcellus is a distinctive boys' name in United States, ranking #1054 in 2025 with 208 recorded births. The name reached its all-time peak in 2021 with 351 births ranking #732. Since 1996, the popularity has increased by 105.9%. In 2025, approximately 1 in every 8,212 boys born was named Marcellus. FALLING Recent data shows the name is currently falling.