Marcus has been given to about 242,999 people in the United States since 1880. It was most common in 1984, which makes it a Gen X and millennial name.
Marcus ranks 258th among American boys in 2025, with 1,341 born that year. Its best year was 1984, when 6,060 babies were given the name, ranking 57th. The typical living American called Marcus is about 36 years old today. It is relatively most common in North Dakota, where it accounts for 0.10% of births.
Source: US Social Security Administration, national and state name files, 2025 release, and the Office for National Statistics for England and Wales. Etymology researched and written by our editors. Living-population and median-age figures are our own estimates, described in the methodology.