Octavius has been given to about 3,702 people in the United States since 1880. It was most common in 1991, which makes it a Gen X and millennial name.
Its best year was 1991, when 126 babies were given the name, ranking 951st. The typical living American called Octavius is about 30 years old today. It is relatively most common in Pennsylvania, where it accounts for 0.01% 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.